Description: Massive-lobose, frequently extremely irregular and untidy in outline; crust or irregular cushions. Size varies from one or two to 10 or morecm in diameter. Frequently yellowish, else a distinctive pinky orange or salmon pink (Methuen codes 7Ab and 7A7); seldom red. Very soft, limp, easily compressible, somewhat elastic. Oscules are irregularly dispersed and few in number. They tend to blend in with the generally ragged appearance of this sponge and so are not always obvious. Their rims are more or less raised, with ragged edges. Sizes range up to 1cm diameter, but are usually smaller. They remain open on collection and preservation.

Habitat: In wave-sheltered locations in the infralittoral, frequently growing on or around algae or sessile/encrusting animals.

Distribution: A southern species: Plymouth, Channel Islands, Skomer, Isle of Man, Roscoff, Azores.

Distribution Map from NBN: Ulosa digitata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Ulosa digitata at iNaturalist World Species Observations database.