What Is a Shark’s 6th Sense? With Marine Biologist Michael Lane - Episode 45

Can sharks ever stop swimming? And what is a shark tooth made from? Marine biologist and shark expert Michael Lane joins us to shed light on common misunderstanding about sharks.
Here’s our trail map:
How Are Sharks Different From Most Fish?
Can Sharks Ever Stop Swimming?
How Do Sharks Use Electricity?
What Is A Shark’s 6th Sense?
How Has God Created Us To Find What We Need?
Episode Links:
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Scriptures Referenced in This Episode:
“A person lives not on bread alone, but by everything God says.” Matthew 4:4 (NCV)
“Jesus answered, ‘I am the way, and the truth, and the life. The only way to the Father is through me.’” John 14:6 (NCV)
“But when the Spirit of truth comes, he will lead you into all truth. He will not speak his own words, but he will speak only what he hears, and he will tell you what is to come.” John 16:13 (NCV)
Terms Learned in This Episode:
Ichthys: Fish
Chondrichthyes: Cartilaginous fish. Fish with cartilage instead of bones.
Cartilage: Strong tissue that is flexible. Protects and supports bones and joints. Human noses and ears are made from cartilage.
Dermal Denticle: Shark teeth which are not made of bone.
Enamel: Hard protective layer around bone or cartilage. Human teeth are covered in enamel. It is the hardest substance in a human body.
Buccal Ventilation: A method some sharks use to breathe. They use muscles in their cheeks to draw water in and push it past gills, which take in oxygen from the water. Sharks that use this can breathe while not moving.
Ram Ventilation: A method some sharks use to breathe while swimming with their mouths open, so water rushes over their gills.
Electroreception: The ability in animals to sense electrical currents and fields.
Ichthyologist: A scientist who studies fish.
Ampullae of Lorenzini: Jelly-filled sacs (pores) that allow a shark to sense the electrical field and find food using electrical currents.
Cephalization: When sensory organs are concentrated on the font of the body or face.
Lateral Line: A line down the center of fish on both sides containing sensory organs. Fish use the lateral line to feel things around them.
Sensitive: Being able to feel slight differences, changes, or influences. Being able to quickly respond to changes around us.