Marine Biologist Answers Fish Questions From Twitter | Tech Support | WIRED

Professor of marine biology Dr. Kory Evans answers your questions about fish from Twitter. Why are orcas attacking boats? What is the fastest creature in the sea? How do octopi change colors to match their environment? Are jellyfish immortal? Answers to these questions and many more await-it's Marine Biology Support.
Director: Lisandro Perez-Rey
Director of Photography: Constantine Economides
Editor: Richard Trammell
Expert: Dr. Kory Evans
Line Producer: Joseph Buscemi
Associate Producer: Brandon White; Paul Gulyas
Production Manager: Peter Brunette
Production & Equipment Manager: Kevin Balash
Casting Producer: Nick Sawyer
Camera Operator: Mar
Sound Mixer: Rebecca O’Neill
Production Assistant: Caleb Clark
Post Production Supervisor: Christian Olguin
Post Production Coordinator: Ian Bryant
Supervising Editor: Doug Larsen
Additional Editor: Paul Tael
Assistant Editor: Billy Ward
00:00 Marine Biology Support
00:10 Is Finding Nemo accurate?
01:00 How do white and brown sand differ?
01:35 How do schools of fish swim in harmony?
02:31 Why are orcas attacking boats?
03:12 What is the fastest sea creature?
03:31 Where do shells come from?
04:26 How do starfish know they're hungry?
05:15 How do mantis shrimp see more colors than humans?
05:56 How did angler fish evolve to emit light?
06:28 What is the smartest animal in the sea?
06:49 How do octopi change their colors?
07:14 How do you tell a fish's age?
07:42 How are fish classified?
08:20 Do all fish have similar fins?
09:08 Does coral count as an animal?
09:56 How do goblin sharks eat?
10:28 Are vampire squids real?
11:02 When did whales learn to walk on land?
11:25 Are seahorses real?
12:00 What is the best defense mechanism in the sea?
12:47 What do fish breathe in: water or air?
13:25 How do sea creatures know where to migrate?
13:58 What is diel vertical migration?
14:33 What lives in the Mariana Trench?
15:12 How do bioluminescent waves work?
15:36 Are jellyfish immortal?
16:36 Where did hermit crabs come from?
17:09 Do fish sleep?
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[@jopo7996]

His presentation style is so smooth. He didn't flounder once.

[@gavingee1042]

nice 😎

[@TheFierywaters]

Schooled!!!

[@Gobra5]

I sea what you did there!

[@dewetslabbert4386]

I sea what you did there

[@joanna0988]

I hope he sees these comments 😅

[@bin4ry_d3struct0r]

Okay, the mantis shrimp boiling water to exceed the temperature of the sun's surface is literally the craziest motherfxxking thing I ever heard.

[@i.d.6492]

Lmao fr

[@martinmartensson4715]

me too, i had to pause the video and think about it.. can we harvest this energy? Like use mantis for energy :)

[@OmnipotentO]

That some anime sht

[@fusionwing4208]

its one of the most well known facts about that particular creature, whats crazy about its punching power is that such a small creature can seriously hurt you with just one strike. It's said to produce forces exceeding a .22 caliber bullet

[@Wolf-ln1ml]

@@martinmartensson4715 It's an _extremely_ small amount of matter that gets heated up this much, so there is aactually very little energy involved (in that aspect). Imagine getting hit by a projectile like a pistol bullet, but instead of an actual bullet, it's a single grain of finely ground flour (ignoring air friction). The _speed_ would be the same as that of an actual pistol bullet, but the mass would be extremely low, and consequently the energy as well - you'd barely notice it instead of bleeding all over the floor ;)

[@Gavrilo-ww6nd]

BRING HIM BACK. MORE VIDEOS WITH THIS GUY.

[@sz9635]

I love when an expert so clearly love their field. Super interesting stuff

[@veronicab15]

yes, their passion is contagious

[@visualcipher8372]

a literal shrimp creating heat as hot as the sun by punching water, my lord.

[@umbreoniteUwU]

It makes a spark of light, too

[@nteta10k]

Out of all the facts… that one’s got me stunned.

[@Kattcreate]

I am shooketh!

[@yakb.7690]

Fun fact the surface of the sun is actually relatively cold -"only" about 5600 degrees celsius. Now the atmosphere and core of the sun are a different story at millions of degrees

[@smilingzuko9613]

The shrimp literally has the power the sun in their hands

[@Mathematics42069]

"No google needed" was so cold

[@jonatanrullman]

I'm and it tech with a degree in project management and even I didn't need to Google that one.

[@lilynoir3939]

...but aren't Marlin the fastest fish? I love his passion tho

[@ezra9521]

@@lilynoir3939”Love his passion though” Dawg, google it. Marlin aren’t the fastest fish. One of the very first sentences I read is how the top speed of Marlin have been greatly exaggerated by certain reports.

[@Fishifyed]

@@jonatanrullmanI’m and human and didn’t need google

[@aLime404]

@@lilynoir3939Sailfish are marlins, but not all marlins are sailfish. Sailfish are the fastest fish in the marlin family (Istiophoridae)

[@FormerlyAVM]

“Fishes” is the most amazing thing in this video. 30 years and I now know it’s fishes, I’m shook.

[@abbyb6958]

Fishes is used when talking about more than one species of fish. When it’s multiple of the same species it’s fish

[@mikeysslice531]

Yep, fishes refer to several species of fish. It works gramtically!

[@LacDuFlambeauNatives]

It’s a double plural

[@callmemyss]

OMG Kory that's my fraternity brother glad to see he still doing his thing with Marine Biology 😊

[@lilianaabramson6959]

Thats my professor!!! Omg!!! Absolutely loved his class last year, definitely one of my favorites I've ever taken!

[@sarahpreston4558]

i wish i had taken his class 😭 also omg hi liliana

[@Facetiously.Esoteric]

Will you ask him why he doesn't point out there is really no such thing as fish? Phylogenetic taxonomic groups must be clades. A clade is a group that includes all the descendents of a common ancestor and that ancestor, and all the different organisms that we think of as fish don't form a clade.

[@bobbifergus3110]

So jealous! I didn't think I'd ever miss sitting in a classroom.

[@Roxxionluvs3]

​@@Facetiously.Esoteric it's a lot easier for others to understand instead of calling them other names. It'll just confuse others.

[@breathingspace3485]

Where does he teach?? I’d love to take his class!

[@Mustlovebooks15]

I could have watched a couple hours of this guy answering questions. He explained enough without going overboard or racing through and not really answering. Super interesting.

[@Fyeris_GS]

Could’ve*?

[@oliverfrots9300]

You couldn't have? Personally I could have, I enjoyed it

[@natsinternetdiary]

same!!!! i love hearing about marine biology and he explained everything so perfectly. WIRED, PLEASE BRING HIM BACK!!!

[@christianhansen3292]

fascinating indeed

[@Melvin-nt9xu]

The description of a Mantis Shrimp is like a Pokémon Pokédex entry

[@jeanettec1354]

i love when people have the ability to make me feel so engaged in something i never realized i would be so interested in

[@lukesguywalker]

Imagining a pod of orcas proudly displaying their rotting fish hats is so funny to me 😭 EDIT: didn't expect a comment I made in passing thought and then promptly forgot about to elicit quite so many fake deep replies, but here we are

[@aidenhall8593]

I’m sure that’s what we look like with our leather jackets

[@MajorJakas]

Do aliens laugh when we wear each other and animals?

[@kimyoonmisurnamefirst7061]

The fashion died out the following summer it kinda came back and then it came back again in 2022... Gorillas apparently have a sense of fashion too?

[@obsidianwing]

@@kimyoonmisurnamefirst7061 they put palm leaves on the head or around them like blankets

[@mayarosales09]

I wish they showed a picture of the fish hats

[@dennisbrown7079]

I imagine them putting on the hat and saying “LoOK iM a hoOMAN” and all the other orcas laugh hysterically

[@philcollinslover56705]

Howdy Howdy Howdy

[@deezbackissues2703]

@@philcollinslover56705 why did i hear this so clearly

[@mollusckscramp4124]

@@deezbackissues2703 same lol

[@RevyMorelia]

I definitely need to see them do that, I hope it is documented in some sort of visual form hahaha

[@ingGS]

This was fascinating and enlightening. You can tell this guy knows his field as he answers so precisely and quickly.

[@evanray8413]

Editing exists.

[@jesnoparat1331]

All of this is so very fascinating. He really knows his stuff and is such a great communicator, which is so so rare. Great video!

[@AlecAkin]

Definitely more of Dr. Kory would be awesome, WIRED!

[@monciparedes]

This needs a part two.

[@rareblues78daddy]

I can see it now: "We've finally learned there is no Twitter" -WIRED! Can't wait for it....

[@ErthBeer]

...you must love videos about animals and stuff?

[@SlamZee]

My dumbass thought this was Suge Knight

[@yazela]

Sameeee 😂

[@drakothysnaco]

This the funniest I’ve heard 😂

[@daemonredfield3211]

My dumbass realised I was spelling Shiv Night incorrectly.

[@jazzi5362]

The way I just cackled

[@DJ-sl6de]

They look nothing alike

[@EmOgirlGuilbert]

TRANS FISH TRANS FISH TRANS FISH LETS GO

[@The_zenithgod]

You’re a disgrace to humanity

[@toasty00000]

🤢

[@AD_RC]

:/

[@academicstewart]

Guys, "Fishes" is correct. The only time "fish" is used in the plural is when you are referring to many of one *kind* of fish. (Which is what we do normally). It is "Fishes" when you are referring to the entirety of the paraphyletic group.

[@cdabcdefg12345]

beyond that, fishes is used to acknowledge individuals, as singular words like that are used to commodify animals

[@ninjaandocean3345]

@@cdabcdefg12345what?

[@rawkhawk414]

This goes for all group nouns. Here are some examples using the word milk: -I love milk. -I love soy milk. -They are both good milks. -I love all kinds of milk. -Different cultivars of soybean will produce different soy milks. In the 2nd to last example, using "all kinds of milks" would also be correct. It would take a pedant detective to even know if you meant "different kinds of [cow] milk" or "different 'milks'" in general. But in the last example, "different soy milk" will actually sound wrong to our ears. To make an identical kind of example using fish let's try this (while quickly fact checking this example I found a better example on wiki lol so behold the first sentence of the wiki entry for Trout): -Trout is a generic common name for numerous species of carnivorous freshwater ray-finned fishes belonging to the genera Oncorhynchus. In general, as the op said, you'll only really find "fishes" written in textbooks. Fishes of the Atlantic Sea, and so forth. The second commenter, can't tell if they were poorly joking or not, but they are on to something as well. If we are referring to all of the individuals of a collective noun, we use a plural verb. If we are referring to a collective noun doing something as a unit we use a singular verb. This logic helps us a bit to know when to when to use fish/fishes, milk/milks, butter/butters, etc. -My butter will be a hit at the Farmer's Market! -Oh yeah? Well one of my butters is sure to win the contest. Actually, all of my butters are guaranteed winners! Note the differences between "my butter", "one of my butters", and "my butters". The word fish is typically used exactly in this way too. Yet a native English speaker with myself wouldn't bat an eye if you said 'fish' for all those examples, and never 'fishes'. And frankly, it's probably because we collectively and historically thought of fish, throughout the years, as a food group. e.g. I love a bit of fish. Cheers! And don't worry if you mess this up, we all do. This is the kind of thing that's not likely to lead to confusion, and it's why we aren't all super confident about the rules.

[@CardsOnDeck]

Wrong… it’s fishi (fishey)

[@ShowMeDemBoobies]

Doesn't matter, sounds stupid.

[@SciMinute]

I couldn't get enough of this guy answering questions. He struck the perfect balance, thorough without being overwhelming or rushing through without real answers. Absolutely fascinating!

[@meiahani2920]

super interesting. can listen to this guy for hours. just the right amount of detail and extras in each answer

[@e_pistolito]

tbh most of this questions deserved a whole video, I cant get enough of him

[@rinnavalcury7008]

I've always wondered if there were immortal beings, and having them be jellyfish just somehow made a lot of sense to me

[@user-us6pj2jw1h]

lol

[@VinnieG-]

immortal means you can't die right.. If you smash one with a hammer it's gonna be dead

[@ENDESGA]

@@VinnieG-immortal means "unable to die naturally over time", and often involves regenerative processes. Invincible would be if you hit it with a hammer, and it wouldn't die. Hydras and tardigrades are almost invincible

[@VinnieG-]

@@ENDESGA chatgpt be lying to me then xd Yes, that's correct. When something is described as immortal, it means that it cannot be killed or destroyed in the conventional sense. Immortality implies an eternal existence, unaffected by the passage of time or any mortal threats. This concept is often associated with mythical beings, gods, and supernatural entities in various cultures and religious traditions. In fiction and folklore, characters such as vampires, gods, and certain mythical creatures are often depicted as immortal, possessing an enduring life force that cannot be extinguished by ordinary means

[@jforozco12]

chat gpt is just an aggregate of things you can find online presented as natural language, dont be fooled by the info provided its as trustworthy as anything you can find by searching google@@VinnieG-

[@BeautyMonster1000]

He's so cool! I could listen to him talk about marine life for hours!

[@yatta747]

I'm in love, clear funky nerdy and soft explanations 10/10❤

[@sarahlazaro9403]

I want to be Dr. Evans when I grow up fr. This guy is great with words and so passionate. We need a part 2!!!

[@Fyeris_GS]

I’ve gotten to know Dr. Kory over the last few years, and he’s a good, genuine, and brilliant man. I’m glad he’s getting in the spotlight and hope he can continue inspiring young people everywhere 😊

[@Facetiously.Esoteric]

Will you ask him why he doesn't point out there is really no such thing as fish? Phylogenetic taxonomic groups must be clades. A clade is a group that includes all the descendents of a common ancestor and that ancestor, and all the different organisms that we think of as fish don't form a clade.

[@ratboygirl]

@@Facetiously.Esotericfor convenience lol edit: also, 8:13

[@Tyme_flies]

​@@Facetiously.Esotericwill you give it up ? Or are you gonna keep asking until someone gives you the answer that you want. I believe it was explained in a earlier comment you left that it WOULD JUST CONFUSE PEOPLE TO USE OTHER NAMES! Geez do you not like the man or what ? Im sure you've spammed this same question down the thread .

[@broylez4lyfe821]

It is extremely humbling to hear an expert disclose specific information right off the dome. Incredibly smart human!!

[@CaptainAMAZINGGG]

You can do this too, if you learn things. 👍

[@tiphainer7143]

I’m sure he knows all this having studied to become a specialist and professor…and also it’s a KZbin video compilation of answers he’s previously provided to questions asked on Twitter. 🤷🏻‍♀️ You can do this to if you learn things you’re passionate about.

[@pepebeans3262]

Dr. Kory Evans was so professional yet so chill whilst answering, loved it

[@brianng8350]

Loves that he gives more info than asked. Wealth of information!

[@thydevdom]

Dude is super easy to listen to and I learned a lot.

[@LadyPantera57]

I didn't know seahorses were real until I was 12, when I went to a pet store and they had seahorses. I had only seen them in illustrated children's books, so I thought they were just a mythical creature.

[@themissyness]

I learned narwhals were real just a few years ago. I’m 30.

[@andiflores4638]

I’ve seen them in the little mermaid, and then I also eventually discovered that they’re real 💚💜❤

[@nigeriazayas184]

I love how knowledgeable he is. Seems like he would be an amazing teacher. I learned a lot form this!

[@stopthecap8796]

I have never once been interested in marine biology, I've watched these kinds of videos about specific jobs I am super interested in, and yet this is by far the most interesting and best one I've seen.

[@morgansmith334]

This was super interesting. Everyone who’s interested in aliens should just be a marine biologist

[@BwInNewJersey]

But where would they fill their need for conspiracy theories?

[@renegadetla9331]

Truth is often stranger than fiction, as they say 😂❤

[@RandomGuyWhoMakesVideos]

2:57 Wait your telling me "Drip" Is a thing in the world of Orca's? Now thats hilarious.

[@Graphomite]

Get you a fish hat.

[@SebastianRodriguez-nk3gb]

I want to highlight how well spoken and accurate this gentleman is, I would love to be his student

[@FatherGixxer]

Was nice how many questions were asked. Sometimes feels like not enough are being asked.

[@bananasnapples9465]

i studying to become a marine biologist right now. this is inspirational to me

[@meep1832]

Keep it up! Many of us here are would-be marine biologists whose dreams were dashed

[@bananasnapples9465]

@@meep1832 thanks

[@tylerlormand5644]

AWE SIT DOWN @@meep1832

[@maddog9265]

i studying too

[@im_boingboing]

I love his vibe so much, he seems so sweet and chill

[@CL-do5eq]

This is the kind of content I will continue to enjoy. Educational and refreshing

[@OrdinaryDrummer]

Very interesting and comprehensive, would love a part 2!

[@brauliogarcia1836]

these are the type of videos that are worth to watch on internet. all the architecture of each creature, molecules, the elements of the earth and the sky is beyond amazing!

[@werbinich]

This was one of the most interesting episodes yet. I exclaimed loudly a few times at the facts provided. 👏👏👏

[@terriwetz6077]

I did too!! 😁 Said "What??" a couple times and "huh!" a few others.

[@mayarosales09]

The mantis fish punch fact got me like ?!?!

[@OneSmileAtATime.]

Wow! Super fascinating information! Thank you for taking time to share this with others.

[@xolaxola110]

You are so smart prof, first KZbin full video in a while

[@SoloAdventureDiva]

I love this series! They find the best people ☺️

[@angstymedusa]

This was fascinating, Dr Evans needs his own nature show.

[@johnlewis9222]

This is one of the most amazing videos I've ever seen my mind is blown

[@virgobrotha]

This is the first video I've ever seen and I love this channel.

[@laurelduvall9092]

Man, I never get tired of marine biology

[@wongwu]

Neither does George Costanza

[@odysseus2551]

really love this guy. please bring him back for a second video!

[@5310yryr]

Hits blunt. Yes please continue my good man. I love this

[@stressedariesmood]

This is genuinely the most interesting video I’ve watched in ages

[@hithere-ck6mu]

at the end of the day we're all just bony fish

[@FoxxyMoxxy13]

Who else paused the video to google orca wearing fish

[@nadineappesbacher952]

😂😂😂

[@kellym9190]

Stop watching me 🤣

[@casetteplayer]

It was a fad at the time biologist posited at the time

[@Deostroyer]

are u FBI???

[@briar7371]

i did HAHAHA

[@Frank7489]

I was not ready for how fascinating this was!

[@okaygworl]

I’m convinced all ocean life is aliens

[@ashleeramirez5744]

I NEED MORE, BRING HIM BACK

[@RandomGuyWhoMakesVideos]

He looks like the type of guy to be a Marine Biologist (In a good way)

[@duffman18]

Black?

[@silastic21]

The only video on KZbin I’ve had to watch slowed down. He’s so knowledgeable and great at explaining, I just couldn’t keep up 😂

[@williamsurname4669]

This is my favourite one of these support videos.

[@Cachicochip]

This was one of my favourite Wired Answers, had me hooked all the way, and I learned some new stuff. Thanks.

[@SirChubbyBunny]

Huh, there really **are** some benefits of being a marine biologist!

[@GenericWBrand]

Classic

[@jmg999]

This was incredibly interesting. Thank you, Dr. Evans!

[@gabejohnson1646]

I didn’t think I would like this video but mad interesting and this guy talks really good

[@hulkslayer626]

This was probably the amazing episode I've seen! Could have something to do with taking Marine Biology classes in grade school and it feeling nostalgic 😊

[@anthonymaitz]

He is amazing. This is my favorite of this series now. I could watch hours of him.

[@tommyegirl]

That was surprisingly super fascinating 👌

[@ozgurtaskent9490]

Fascinating content! Amazing presentation in such a condensed time!

[@dshepherd107]

This might be one of the best short, most fascinating marine animal Q&A I’ve seen. Thanks a lot!!

[@abigailgarcia3090]

This man is a true TEACHER! he educates , keeps you engaged and drops additional knowledge without inundating you with information. ❤

[@arjayestorgio2603]

It's the first video that I've watched on your YT page, he made me subscribe hahahaha. He's amazing! clear, concise and informative.

[@Axhka6]

Marine biologist 🗣️🗣️🗣️ JOJO REFERENCE 🗣️🗣️🗣️🗣️🗣️🗣️ORA ORA ORA 🗣️🗣️🗣️🗣️

[@coldrunhershel604]

Thank you, I was about to be extremely disappointed but you saves my day

[@melylicious]

Pls elaborate

[@coldrunhershel604]

@@melylicious was looking for someone to bring up JoJo Part 3 protagonist Jotaro who becomes a Marine Biologist later in the series

[@ozamram]

This was so interesting and everything was well explained. Thank you Dr. Evans!

[@12thDecember]

I knew I was going to enjoy this as soon as I saw his great smile. ♥ Super questions and answers. Thanks, Wired!

[@Xnnx__]

This one is outrageous to me !! 🤯❤️‍🔥 I love this series

[@zyxw2000]

Another delightful presentation!

[@ZoneKei]

This was so informative! Absolutely crammed with info. Thanks Kory!

[@pedrobrandaod]

Wow, such good explanations! Bring him back!!!

[@charlieoctogirl]

This dude is SUCH a good explainer! I'm a massive ocean nerd and loved this! Thank you! 🐙😘

[@alitzzy]

The questions are getting better or this was indeed a subject that I didn't know much about. So many interesting points! Thank you!

[@ShugAveri]

So fascinating. Dr Evans explained everything perfectly.

[@gregorypappas8226]

Please do parts 2 and three with this marine biologist.

[@meyercamden]

Love This! Fantastic teacher with great facts. Thank you for sharing.

[@lauren-ry8rn]

I loved this! I hope there'll be a part 2!

[@nancyl6745]

Truly fascinating! I volunteer regularly at a very special coral reef bay doing education and conservation. And there were things in here I didn’t know it was very interesting and informative. Really a well done video as well. Want to see more of this! Want everyone to see more of this!

[@anzhi.1506]

Glad i already knew most of these facts but its still so fascinating to know about the ocean!

[@MostlyMajestic]

This was entertaining. Thanks for sharing your knowledge.

[@GabiNands]

One of the best Tech Supports ever! Loved this dude!!!

[@josiahscott9108]

I’m just here because I went to high school with Dr. Kory. Just proud I know/knew this guy

[@Addison-RN]

I absolutely LOVE ANYONE who is passionate about their job ! This guy teaches so well! that Im ready to give up my Hematology/Psycholoy Nursing career to become a Marine Biologist.

[@hazeld7216]

I am so impressed and fascinated by all his answers 😮

[@RaindropsSunshine]

Thanks Dr. Evans! Learned so much :)

[@Mister.Meeseeks]

WOW, one of the best so far!

[@PianomanKY]

I've watched a ton of these videos, I'm always curious about the featured professors/experts and what inspired them to get into their field.

[@Emeehhh]

I feel like I went to 2-day marine biology seminar in less than 30 min. Loved it 💜

[@annarmontanar]

I would have watched a 2-hour-version of this video. So interesting and well presented.