Living Sea - Definitions

 Section A

1. plankton-tiny plants and animals that float in the upper regions of the ocean

2. molecule-the smallest part of a substance that still has all the qualities of that substance 3. atom-the smallest part of an element (much too small to be seen); made of one or more electrons flying about a nucleus

4. aquifer-an underground place where water collects

5. tide-the systematic rise and fall of ocean water every six hours 6. intertidal zone-one of various regions between the low-tide and high-tide lines where plants and animals are clustered together

7. molluska soft-bodied invertebrate often hav ing a protective shell (exoskeleton)

8. bivalve-a mollusk having two matching shells joined by hinges 9. univalve-a mollusk having a single shell

10. crustacean-an invertebrate with a crust like shell, a segmented body, and jointed legs, such as shrimp, lobsters, and crabs; a kind of shellfish

11. regenerate-to regrow

12. pinniped-an animal with flippers, such as a walrus or seal; a "wing-footed" animal

13. blubber-a thick layer of fat under the skin of most sea mammals that protects them from the  cold and helps them float

14. rookery-a colony, usually of birds

15. oceanographer-a scientist who studies the sea

 Section B

1. has teeth which are fused to form a beak

parrotfish

2. has an outer covering that forms reefs

coral polyp

3. the most poisonous fish in the world

stonefish 

4. a colorful animal that looks like a flower

sea anemone

5. water plants such as seaweed

algae

6. an invertebrate that cements itself to rock

barnacle

7. the largest flying bird 

wandering albatross

8. the largest pinniped

elephant seal

9. a snail that eats mussels

whelk

10. a bivalve that forms pearls

oyster

11. a large pinniped with tusks

walrus

12. a small, one- or two-shelled invertebrate

mollusk

13. the cleaner mimic

blenny

14. the fish that swims upright

sea horse

15. uses tools to crack open sea urchins

sea otter