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2007-03-01 10:35:26 · 3 answers · asked by Anonymous in Environment

the type that grows on rocks

2007-03-01 10:51:07 · update #1

3 answers

Usually you'll find animals with a hard shell that can withstand the high energy of incoming waves, and are tolerant of salt water. These include bivalves (oysters, clams, mussels, limpets), gastropods (snails of all kinds), crustaceans (crabs of all kinds), and some smaller arthropods (animals that look like "pill" or "potato" bugs). The majority of these hard-shelled animals are vegetarian; they "graze", that is, scrape algae off the rocks for food.

It also depends on how high the water gets around the rocks--are they in the tidal zone, landward of the tidal zone, etc; if they are in the tidal zone, lots of things live around them because there is a lot of tiny bits of food available, brought in by the waves. So, if you're able to withstand getting scrubbed by the waves, lliving (and fishing!) in the tidal zone is good eatin'!

When I'm at the beach, I easily find small snails and limpets when I look under rocks. If you look closely, you'll also see tiny crabs and other skittering insect-like critters. Besure to count legs before you call something an insect--they have six legs, crabs and spiders, eight.

Predators such as shorebirds (for example, oyster catchers) also hang around the rocks in the tidal zone, looking for a meal. Tidal pools may be considered rocky areas, and they have all sorts of shallow water critters in them, including fish, starfish, brittle stars, shrimp, all sorts of snails, crabs, and sea urchins.

2007-03-01 11:56:20 · answer #1 · answered by brigida 2 · 1 0

Organisms that bore holes eg crab,scorpions and beetles.

2007-03-01 18:46:11 · answer #2 · answered by ebiyedinak 3 · 0 0

Barnacles, algae, seaweed, kelp, moss, diatoms.

2007-03-03 20:35:31 · answer #3 · answered by Professor Armitage 7 · 0 0

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