tundra biome
Loads and loads. you keep seeing them pull crabs up in the pots. crabs live at the bottom of the sea. near sponge bob. also the sea can be quite wet and deep, in some parts.
Land Crabs live on land and Marine crabs live in water.
hermit crabs live in the intertidal zone
harmful
About 300 calories.
Crabs are scavengers. If a person were to drown and sink, crabs wouldn't mind having a nibble at the body.
The Alaskan Snow Crab has a very short adulthood. The do not reach maturity until they are 6 or 7 years old; the average lifespan is around 10 years.
no , crabs live in fresh water
Snow crabs are relatively high in cholesterol, but they make up for it, by being a relatively low calorie food. (Relatively to other sea food.)
sharks and other big fish
hermit crabs i guess