user: A mermaid finds a hermit crab hidden in a blue shell. She is excited to tell other mermaids about her discovery and swims away to look for them. In the meantime, the hermit crab decides that the blue shell is rather small and uncomfortable. He decides to swap it for a green shell that he has found nearby. He brings along all of his belongings and hides in the green shell. The blue shell is now abandoned and empty. An octopus observes all this and ponders whether it is a good time to try to catch and eat the crab, but then decides that it is still too early for dinner. A few nautical miles away, the mermaid finds her friends smoking seaweed. They all go back to see the crab. The hermit crab calls the mermaid and tells her that he moved from the blue shell to the green shell. The mermaid believes the hermit crab. Where will the mermaid look for the crab next time?

assistant: The mermaid will look for the crab in the green shell next time. The mermaid and her friends are fascinated by the hermit crab's ability to change shells. They decide to leave the hermit crab in peace, promising to visit him again soon.