Aerial image of Tynemouth Priory and Castle, on a rocky headland known as Pen Bal Crag, Tyne and Wear, England, United Kingdom, Europe

Porcelain Crab on Sea Pen, Porcellanella triloba, Komodo National Park, Indonesia

View across bay from Trwyn y Penrhyn to Aberdaron on the Lleyn Peninsula (Pen Llyn), Gwynedd, North Wales, Wales, United Kingdom, Europe

Landscape, Pointe de Pen Hir, Camaret-sur-Mer, Finistere, Brittany, France, Europe

Long exposure on the cliffs and rocks at Pen Hir, Finistere, Brittany, France, Europe

Long exposure of the Milky Way above the cape of Pen Hir, Brittany, France, Europe

Bottlenose dolphin (Tursiops truncatus) in a sea pen. Red Sea. Captive

Bottlenose dolphin (Tursiops truncatus) in a sea pen. Red Sea. Captive

Bottlenose dolphin (Tursiops truncatus) in a sea pen. Red Sea. Captive

A pig being flooded out by global warming induced sea level rise on Funafuti Atoll, Tuvalu, Pacific

Fleshy Sea Pen.Indo Pacific

A pig being flooded out by global warming induced sea level rise on Funafuti Atoll, Tuvalu, Pacific

Detail of soft, golden Sea Pen. UK.

Sea Pen

A circular farming structure a animal enclosures along the coast; Hunaping vestra, Northwestern Region, Iceland

France, Brittany, Pointe de Pen-Hir, Les Tas de Pois, Pile of Peas, islets off the Pointe de Pen-Hir on the Presqu'ile de Crozon.

Noble Pen Shell, Pinna nobilis, Les Ferranelles, Medes Islands, Costa Brava, Mediterranean Sea, Spain

Noble Pen Shell, Pinna nobilis, Les Ferranelles, Medes Islands, Costa Brava, Mediterranean Sea, Spain

Portrait of a little boy wearing an orange abaya and a black and gold kofia, hiding behind a wooden pole. In the late afternoon, children from a small village come to play on the white sand beach and turquoise sea on the east coast of Zanzibar, Tanzania..,

Dead fan mussel and diver, Mediterranean Sea. Massive mortality of Noble Pen Shell (Pinna nobilis) infected with the parasite Haplosporidium. Porticcio. Corsica. Mediterranean.

Plumose Anemones and Orange Sea Pen, Pacific Ocean Alaska

Broken-back shrimp on Orange Sea Pen, Alaska Pacific Ocean

Broken-back shrimp on Orange Sea Pen, Alaska Pacific Ocean

Broken-back shrimp on Orange Sea Pen, Alaska Pacific Ocean

Broken-back shrimp on Orange Sea Pen, Alaska Pacific Ocean

Orange Sea Pen, Pacific Ocean Alaska USA

Pen Shell in the reef, Mediterranean Sea France