What are the behavioral adaptations of a spider crab?

Answer 1

Barnacles close their valves tightly to avoid drying when the tide goes out. However, when the tides are high, their shells are tough enough to withstand the constant pounding of the waves. Or they would attach them selves to rocks also they would attach themself to whales at some point.
Sessile , attached with help of antanae , hermaphrodite .

Answer 2

Crabs use their claws to defend themselves.
It has powerful pincers to grab prey tightly and pointed legs to walk on mud found at the

bottom of the sea. It also has gill chambers so that it can store water in it when in the sea

and use the oxygen from the water when on land.

Answer 3

Some species of Crab, like the Masked Crabs, bury into the sand to avoid the water of high tide.

like when people.

Answer 4

The mud crab has some important adaptations. It has a hard shell to protect itself from predators and large claws to bury itself in the mud.

Answer 5

well it has a hard shell so the female can feel his hard shelll ;P
and it camoflauges in with its habitat so it doesnt get violated

Answer 6

it has a big shell