_________________ are tiny plants and animals that float in the upper regions of the ocean.
plankton
An ___________________ is an underwater place where water collects.
aquifer
_______________ are a systematic rise and fall of ocean water.
Tides
_____________________ are invertebrates with a crust-like shell.
Crustaceans
_________________________ is a thick layer of fat under the skin of most sea mammals that protects them from the cold and helps them float.
Blubber
An _______________________ is a scientist who studies the sea.
oceanographer
The most poisonous fish in the world
Stonefish
The fish that swims upright
sea horse
the largest pinniped
elephant seal
the largest flying bird
wandering albatross
a bivalve that forms pearls
oyster
a large pinniped with tusks
walrus
uses tools to crack open sea urchins
sea otter
has teeth which are fused to form a beak
parrotfish
a snail that eats mussels
whelk
The ocean covers _________________ of the earth's surface.
Three fourths
