1.the hermit crab is much smaller so it can hide and blend in much more
2.it will feed of starfish seaweed and any other thing smaller than it
3.if the rock pool has sand it will bury its self
shore crab
they grow hard shells to protect themselves against predators and pincers so the can catch their prey. If they didn't have these things then the species could die out.
sea urchins, sea stars, sea anemones, octopus, mussels, chiton, hermit crab,c oralline algae, limpet, shore crab, turban snail and barnacles.
They live in the your pool
a bird
because we like to take massive pool pool around the world
pool look at window
because we like to take massive pool pool around the world
yes bacteria grows on anything, but if you are diligent in providing them with an ocean style salt water pool the crab is fairly safe from a bacterial growth problem.
Non-living things in a rock pool include elements like water, sand, and various types of rocks and minerals. Additionally, the sunlight that penetrates the water and the air above the pool are also considered non-living components. These elements create an environment that supports the living organisms found within the rock pool.
Put the water in a hermit crab pool from a pet store, but make sure if you use tap water to get a Purifier Liquid to kill those nasty chemicals.
There is no purpose, they just happen and the ones that work persist in the gene pool.