1. The breadcrumb sponge, Halichondria panicea, can 

 be crumbled like stale bread. The thin patches that en- 

 crust shaded rocks on the shore are usually greenish but 

 mav be cream\ or orange. (Brittany, France. Ralph 

 Buchsbaum ) 



2. This globular commensal sponge, Suheiites, overgrows the shells inhabited by cer- 

 tain hermit crabs. It repels predators by its distastefulness, and benefits from being 

 carried about to new feeding grounds. (Ban\uls, France. Ralph Buchsbaum) 



