More like it

We're quite happy when the morning gloom burns off; by three P.M. we were warm again. Out we marched.
We saw some footage of coral reef denizens; one in particular may be a newly discovered species. They are tiny shrimp, about the size of grains of rice, who live in colonies inside sponges. They have differentiated anatomies for various tasks - the guard shrimp have huge pincers, etc. When a comparatively huge sort of sea worm slithered into their sponge dwelling, opening its maw like that creature in the sand pit in Star Wars, the little guard shrimp rushed to pinch the hell out of it, driving it away. First time they have ever found shrimp living in a group, cooperating.
Onward into the strangeness of the LeGuin fiction...