| A | B |
| eel | a long, thin fish that looks like a snake |
| escaped | to get away from something |
| fierce | wild and dangerous |
| hidden | to put something in a place where it cannot be seen |
| machine | a thing invented to do a particular job |
| marvel | a wonderful or amazing thing |
| medusa | a jelly fish |
| mussel | an animal that looks like a clam |
| sea anemone | a sea animal shaped like a tube that attaches itself to rocks |
| seaweed | any plant or plants that grow in the sea |
| swaying | to move back and forth |
| swift | move or able to move very quickly |