they are really big like you
A sea hermit crab carries sea anemones on it's back to protect it from other predators.
Crabs and Shrimps often form commensalistic symbiotic relationships with anemones in tropical waters, again for the purposes of protection from predation. For instance the Anemone crab, Neopetrolisthes oshimai, which is a filter feeding Porcelain crab, lives and captures its food from within the tentacles of giant anemones.See related link for more details.
Hermit crabs share symbiotic relationship with sea anemones. These invertebrates are covered with stinging cells which explode at the slightest touch. But hermit crabs regularly carry sea anemones around with them, stuck to their shells. In fact, they will often pick up sea anemones and 'plant' them on their backs, and when they move to another shell, will take their resident sea anemone with them!This co-operation works well for both partners; the sea anemone eats food particles left by the crab, and the crab is protected from its enemies, notably octopuses, by the stinging cells of the sea anemone.
The boxer crab carries small anemones on its front legs to ward off attackers. The anemone might benefit by getting to eat the boxer crab's leftover food. If both benefit, it's mutualism. If only one benefits and the other is unharmed, it's commensalism.
COMMENSALISM as the crab benefits as the sea anemone provides it with protection but the sea anemone doesn't benefits nor is harmed by the crab
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.
anemone.
hermit crab and sea anemone(there in school text books)
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.
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.
Barnacles or anemones which ride on top of a lobster's shell and help protect it are symbiotic. This means that the two different living organisms work together in a mutually beneficial manner for survival.
mutualism