Description: Previously recorded as Prosuberites epiphytum. This sponge forms thin translucent yellow-green encrustations beneath boulders and on silty sublittoral rock faces. It has a network of excurrent channels which converge on a few oscules.

Habitat: Beneath boulders in places with wave or tidal stream water movement and in silty sublittoral sites

Distribution: Western coasts of the British Isles.

Key Identification Features:

• Thin yellow translucent crust
• Typical shore species
• Pattern of branching of excurrent channels

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

iNaturalist: Protosuberites denhartogi at iNaturalist World Species Observations database.