求1篇文章的详细JJ

Sea butterflies

V1 (By yzhao26)

Sea butterflies, also known as Thecosomata or flapping snails, are a taxonomic suborder of pelagic swimming sea snails.

Then talk about the relationship the shrimp and the sea butterflies.

They are neither the model of coexist nor parasitism. The ETS give a new concept and blalalalala

考题:

1. Question: Ask main Idea?

2. Ask the new relationship the shrimp & sea butterflies