Keys 1 - Free Student Essays Examples

3 nektons

shark, treen sea turtle, dolphine, ocean tiggerfish, blue tang

3 planktons

amphipod, diatoms, ctenophore, zoea of crab, chaognath, codepod, medusa

3 benthos

tunicate, turtle grass, tulip snail, neptune’s shaving brush, basket sponge, spiny lobster, star coral

plants and animals that live on or in the bottom

benthos

Strong swimming animals that live in the open water.

Nekton

What are gills supported by?

gill arches

Plants or animals that are either weak swimmers or can’t swim at all and consequently float.

plankton

Thin- walled vascularized structures.

gills