https://www.kidssoup.com/craft-and-resource/a-house-for-hermit-crab-story-time-and-graduation-activities
A House for Hermit Crab Movement Activity:
Show children pictures depicting the various animals in the book. First, talk about the animal. (For example, a sea anemone looks like a flower. It uses its many arms to catch its prey, such as small fish and shrimp. Some sea anemones even attach themselves to the shells of hermit crabs. They protect and camouflage the hermit crab. In turn, the anemone is allowed to share the hermit crab's meals.) Next, hold up a Hermit Crab word wall card, read the word together, and let children make a movement that matches the word on the card:
Hermit Crab: Make a fist on top of one hand and make crab legs with fingers.
Shell: Roll your body into a roll/shell.
Sea anemone: Pretend to catch prey with arms.
Starfish: Stretch arms and legs to make an X. 
Seaweed: Stretch arms in the air and move the arms like seaweed in the ocean.
Coral: Create coral sculpture with arms and don't move.
Sea urchin: Fold hands and stretch fingers.
Snail: Move like a snail.
Lanternfish: Pretend to be a fish.
Pebbles: Make a fist.
Small: Roll your body into a small ball. 
Large: Roll your body loosely into a large ball/shell.

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