Keys 1

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
Strong swimming animals that live in the open water.
What are gills supported by?
gill arches
Plants or animals that are either weak swimmers or can’t swim at all and consequently float.
Thin- walled vascularized structures.