- Kingdom: Animalia
- Phylum: Porifera
- Class: Demospongiae
- Order: Poecilosclerida
- Family: Isodictyidae
- Scientific name: Isodictya palmata
- Norwegian: -
This is a large, up 35 cm high, erect, branching sponge. The branches are variable compressed and typically 2-3 cm wide. The color is usually yellow, orange or brown. Small specimens may be confused with Haliclona oculata.
It is often seen on rocky locations, on depths from 10 meters and down. The similar Haliclona oculata is found considerably deeper.
It is widespread at both sides of the North Atlantic Ocean, as far south as the British Isles in the east and the Gulf of Main in the west.