Linda Pitkin / 2020VISION / Male Black faced blenny (Tripterygion delaisi), part of a sequence showing colour change, Swanage, Dorset, England, UK, May. 2/4

Wild Wonders of Europe / Banfi / Male Yellow triplefin blenny (Tripterygion delaisi) Larvotto Marine Reserve, Monaco, Mediterranean Sea, July 2009

Sue Daly / Black faced blenny (Tripterygion delaisi) female and male Sark, British Channel Islands, July.

Sue Daly / Black faced blenny (Tripterygion delaisi) Guillaumesse, Sark, British Channel Islands.

Sue Daly / Black faced blenny (Tripterygion delaisi) Guillaumesse, Sark, British Channel Islands.

Franco Banfi / Black-faced blenny female (Tripterygion delaisi) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Linda Pitkin / 2020VISION / Male Black faced blenny (Tripterygion delaisi), part of a sequence showing colour change, Swanage, Dorset, England, UK, May. 4/4

Linda Pitkin / 2020VISION / Male Black faced blenny (Tripterygion delaisi), part of a sequence showing colour change, Swanage, Dorset, England, UK, May. 3/4

Linda Pitkin / 2020VISION / Male Black faced blenny (Tripterygion delaisi), part of a sequence showing colour change, Swanage, Dorset, England, UK, May. 1/4

Sue Daly / Black faced blenny (Tripterygion delaisi) female camouflaged against habitat, Channel Islands, UK July

Sue Daly / Black faced blenny (Tripterygion delaisi) male camouflaged against anemones, Channel Islands, UK May

Solvin Zankl / Blenny (Tripterygion delaisi) San Pietro Island, Sardinia, Italy, Mediterranean, July