Pedair Afon LIFE - Llysywen bendoll y môr / Four Rivers for LIFE - Sea lamprey

*SCROLL DOWN FOR ENGLISH*
Mae'r fideo hwn yn dangos pâr o lysywod pendoll y môr yn adeiladu eu cochion (nythod) yn barod ar gyfer silio. Rydyn ni wedi arafu'r fideo i ddangos i chi sut maen nhw'n defnyddio eu ceg siâp cwpan sugno i symud cerrig wrth adeiladu eu nythod.
*ENGLISH*
This video shows a pair of sea lamprey building their redds (nests) in readiness for spawning. We’ve slowed down the video to show you how they use their suction cup shaped mouth to move stones when building their redds.