Rock ptarmigan (Lagopus muta hyperborea), Billefjord, Svalbard, Spitzbergen, Norway, Scandinavia, Europe

Giant barrel sponge (Xestosongia muta), and sunburst, St. Lucia, West Indies, Caribbean, Central America

Giant barrel sponge (Xestosongia muta), St. Lucia, West Indies, Caribbean, Central America

Svalbard rock ptarmigan (Lagopus muta hyperborea), Svalbard, Norway, Scandinavia, Europe

Svalbard rock ptarmigan (Lagopus muta hyperborea), Svalbard, Norway, Scandinavia, Europe

Barrel sponge (Xestospongia muta), large barrel sponge in spur and groove reef, Little Cayman Island, Cayman Islands, Caribbean

Barrel sponge (Xestospongia muta), large barrel sponge in spur and groove reef, Little Cayman Island, Cayman Islands, Caribbean

Barrel sponge (Xestospongia muta), large barrel sponge in spur and groove reef, Little Cayman Island, Cayman Islands, Caribbean

Female diver with a lamp looking at a Barrel Sponge (Xestospongia muta) in a multi-coloured coral reef with various sponges and corals, Hopkins, Dangria, Belize, Central America, Caribbean

Rock Ptarmigan (Lagopus muta) in winter plumage, sitting in snow, Highlands, Scotland, Great Britain

Diver looking at Giant Barrel Sponge (Xestospongia muta) in coral reef, Caribbean, Dominican Republic, Central America

Rock ptarmigan;Lagopus muta) on a rock at the top of a mountain, Alps, Austria.

Rock Ptarmigan (Lagopus muta) in autumnal Tundra in the north west of Greenland. America, North America, Greenland, Denmark, August

Rock ptarmigan;Lagopus muta) on a rock at the top of a mountain, Alps, Austria.