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Characteristics:

G. macandrewii is a large, irregular shaped sponge. Apart from the shape it is very similar to the spherical sponge G. baretti. The color is usually white and brown.

Habitat:

It is most frequent deeper than 150 meters, but in some of the sheltered fjords it can be found already on 30-40 meters depth. It thrives on steep walls and other rocky substrate.

Distribution:

G. macandrewii is registered at the west coasts of the British Isles and Norway, as far north as Trøndelag.