Alex Mustard,Alex Mustard / A nudibranch (Flabellina nobilis) feeding on a solitary hydroid (Tubularia indivisa), note how the hydroid is bent back as it is pulled into the nudibranch's mouth. Gulen, Bergen, Norway. North East A...

Alex Mustard / Plumose anemones (Metridium senile) and common starfish (Asterias rubens) beneath the sun in a Norwegian Fjord. Gulen, Bergen, Norway. North East Atlantic Ocean.

Graham Eaton / A small vilage and waterfall in Birch woodland on the slopes of Naerfjord, near Bergen, Norway, April

Graham Eaton / A small waterfall and Birch woodland on the slopes of Naerfjord, near Bergen, Norway, April

Alex Mustard / High magnification photo of the spines of a Common starfish (Asterias rubens). Gulen, Bergen, Norway. North Sea, North East Atlantic Ocean.

Alex Mustard / Diver examines a wall covered in large Sea squirts (Ciona intestinalis). Gulen, Bergen, Norway. North Sea, North East Atlantic Ocean.

Alex Mustard / Colourful yellow sun star (Solaster endeca) climbing on a kelp frond. Gulen, Bergen, Norway. North Sea, North East Atlantic Ocean.

Alex Mustard / Portrait of a male Cuckoo wrasse (Labrus mixtus) Gulen, Bergen, Norway. North Sea, North East Atlantic Ocean.

Pal Hermansen / Sunrise light over Byfjorden World Heritage Site, Bergen, Norway, August 2012.

Ole Jorgen Liodden / Purple sandpiper (Calidris maritima) preening, Bergen, Norway, October.

Ole Jorgen Liodden / American mink (Mustela vision) walking, Bergen, Norway. October. Invasive species.

Ole Jorgen Liodden / American mink (Mustela vision) smelling ground, Bergen, Norway. October. Invasive species.