A hermit crab who has outgrown his old shell moves into a new one, which he decorates and enhances with the various sea creatures he meets in his travels.
Absorbed in his search for food, a shy hermit crab, disguised in a fancy new shell, inadvertently rescues a flounder caught beneath a trap and wins the admiration of the other marine animals.
When Neville sees the hermit crabs which he so gently collected being mistreated by the crab man at a Jamaican hotel, he no longer wants to supply them but would thereby forfeit his income.