upwellings of magma began to lift the seafloor... 岩浆喷发开始抬高海床
Big jaws have let this fringehead rule his strip of seafloor, 巨大的颌令勃氏新热鳚 统治着它的海底地带
they were the very first animals to escape the seafloor and swim. 它们是第一种从海底逃离 并开始游泳的生物
its prey is anchored to the seafloor 它的猎物根植于海底
Most are soft-bodied and rooted to the seafloor. 多数为软体且根植于海底
The plants can be ripped from the seafloor... 这些植物会被连根拔起