Keys 1 May 11, 2019 admin 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 Related posts: Wetlands Exam 3 Wetlands Exam 2 Water Quality Wetlands Jackson