freshwater sponge
61Stream bed — The bed of this stream is armored with rocks, some very rounded (having had a longer life in the stream) and some not. A stream bed is the channel bottom of a stream, river or creek; the physical confine of the normal water flow. The lateral… …
62Aquatic insects — A water beetle A whirligig beetle Aquatic insects live some portion of their life cycle in the water. They feed in the same way …
63Lake stratification — Lake zones Littoral zone Limnetic zone Profundal zone Bent …
64Marine ecosystem — Coral reefs form complex marine ecosystems with tremendous biodiversity …
65Neuston — Two water striders, common neustons Neuston is the collective term for the organisms that float on the top of water (epineuston) or live right under the surface (hyponeuston). Neustons are made up of some species of fish (see flying fish[1] …
66Éponge d'eau douce — Les éponges d eau douce ont longtemps été considérées comme des végétaux, mais ce sont (comme toutes les éponges) des animaux pluricellulaires primitifs d organisation très simple (Métazoaires). Elles peuvent comme les coraux quand elles… …
67Outline of water — Faucet dripping water. Structure of the …
68Plankton — For other uses, see Plankton (disambiguation). Photomontage of planktonic organisms Plankton (singular plankter) are any drifting organisms (plants …
69Zooplankton — A copepod (Calanoida sp.) Zooplankton  / …
70Mangrove — World mangrove distribution …
