| Myxilla incrustans (Esper, 1805) Rough scallop sponge | 
|   | 
| photo by 
	Greenfield, Jim | 
| Family: | Myxillidae () | |||
| Max. size: | 1 cm H (male/unsexed) | |||
| Environment: | sessile; marine; depth range 4 - 274 m | |||
| Distribution: | Pacific Ocean, Northern Atlantic, Mediterranean and the Arctic. Subtropical to polar. | |||
| Diagnosis: | ||||
| Biology: | Inhabits subtidal areas (Ref. 116516). Found on scallop shells (Ref. 865). | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. 123251) | |||
| Threat to humans: | ||||
| Country info: |  | |||