Description

Also known as Anemone Carrier, Anemone-carrying Hermit Crab, Anemone Decorated Crab, Coral Hermit Crab, Hermit Crab, Jewelled Anemone Hermit Crab, Lumpy-handed Hermit Crab, Parasite Anemone Hermit Crab, Pink-clawed Hermit, Sea Anemone Hermit Crab.

Found over sandy bottoms and in seagrass beds, of bays, lagoons, and coastal reefs. Its shell is planted with one or two commensal sea anemones to deter predators. They feed on the anemones attached to their shells, even removing from other crabs shells. Striped body, blue green eyes.
They feed on invertebrates and molluscs.
Length - 5cm
Depth - 1-40m
Widespread Indo-Pacific

Hermit Crab Anemone - Calliactis polypus
http://www.whatsthatfish.com/fish/hermit-crab-anemone/1400

Anomura crabs are considered false crabs, they have a longer abdomen and the back legs are modified or reduced so hardly noticeable.
These crabs include the hermit crabs and squat lobsters.
Many thousands of species live worldwide in sea water, fresh water and on land.
Hermit crabs change their shells regularly but only when they find a larger and newer shell to feel safe in! Ref: https://en.wikipedia.org/wiki/Dardanus_pedunculatus