Its symbiotic though mostly for the crabs benefit - most anemones are sessile - that is fixed in place and get food from whatever comes by. A crab will actually take on in its claws and put it on its shell - even Hermit crabs will put one on their fake shells - this is to protect the crab. Anemones have stinging tentacles to protect themselves and with these crabs can protect themselves against predators, in particular Octopuses which would otherwise have the crab for a snack - its not just a one way relationship though - as the anemone is always around when crabs eat, they benefit from the messy eating habits, foods stuff float by and the anemone can eat them.
the hermit crab attaches the anemone to its shell as protection from the big fish with the sharp teeth and octopuses and squids and you know what else is a hermitcrab YOUR MOTHERR:P
no
One example: A sea anemone and hermit crab have a mutual relationship. The sea anemone protects the crab and the crab provides food.
Usually the anemone will attach itself to the shell of the hermit crab for transportation as well as the ocassional food gathering. And the hermit crab recieves protection from the anemone through the use of the anemone's natural ability of stinging things that get too close.
The relationship between a hermit crab and a shell is that thy are mutualism.
When a sea snail dies, its shell eventually washes up on shore, where the hermit crab uses it as its new home. Therefore this would be commensalism, however since the snail already died there is no living symbiosis.
When both organisms benefit from a symbiotic relationship, it is known as "mutualism." Other common types of symbiosis include "commensalism" (when one benefits and the other is unaffected) and "parasitism" (when one benefits and the other suffers).
Commensalism
A sea hermit crab carries sea anemones on it's back to protect it from other predators.
they all live in the ocean!!!
mutalism
This would generally be viewed as a symbiotic or mutual relationship. The anemone benefits by being transported to different locations, some of which may be richer in food supply. The crab benefits from the camouflage the anemone provides, the partial protection of having a stinging anemone in close proximity and also from pieces of food which the anemone may drop.