that looks positively evil.
Are you kidding?
I see a delicate and beautiful creature that testifies to the existence of its wonderful Creator.
The only instructions I could offer the zoo is not to feed and water them (especially after midnight).
You should seee the 13 inch Sea Cucumber in our 250 gal salt water reef aquarium. Reminds me of a Graboid from the movie Tremors.
http://animals.nationalgeographic.com/animals/invertebrates/sea-cucumber/