Crab Shell Exchange Process

Caribbean hermit crabs constantly seek new shells as they grow. When a shell is too big, crabs wait for others to swap shells, forming a conga line to exchange shells efficiently. This cooperative behavior ensures each crab finds a suitable home.

Why do Caribbean hermit crabs need to find new shells?

• They need to hide from predators.

• They want to show off to other crabs.

• They are always growing and need more space.

• They like to change shells for fun.

What do crabs do when they find a shell that is too big?

• They move on to find another shell.

• They abandon the shell and go back to their old one.

• They try to squeeze into the big shell.

• They wait for another crab to take the big shell.

What happens when a great new shell appears on the shore?

• Crabs all try to fit into the new shell at once.

• Crabs ignore the new shell.

• Crabs form a line by size.

• Crabs fight over the new shell.

How do crabs ensure everyone gets a better shell in the conga line?

• Each crab moves into the shell left by the crab in front.

• They take turns trying the new shell.

• They share the new shell equally.

• They vote on who gets the new shell.

What is the outcome of the shell exchange process?

• The smallest crab is left without a shell.

• Only the biggest crab benefits.

• The new shell is left unused.

• All crabs end up with a better fitting shell.