Natural History : Associates

Size & Form

Growth & Age

Water pumping

Keeping clean

Deterring Predators 
and Settlers


Associates Habitat

Squat lobsters (Munida quadrispina) on Cloud Sponge


Cloud Sponge Shrimp Eualis butleri

Divers often reported a tiny green sphere in Cloud Sponges. These turned out to be the green eggs of a shrimp which is regularly associated with Cloud Sponges in Saanich Inlet.


Longhorn Decorator Crab Chorilia longipes.



Quillback Rockfish are commonly present in or around the Cloud Sponges.

This male Ling Cod is guarding his mate's eggs.
                                                                Only armored fish with scales and squat lobsters, crabs and shrimp with shells utilize  the outer surfaces of living sponges. Why?