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

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

Roberto Rinaldi / Black faced blenny (Tripterygion delaisi) amongst fronds of invasive algae (Caulerpa taxifolia) Strait of Messina, Southern Italy

Sue Daly / Black-face Blenny (Tripterygion delaisi) male. Channel Islands, UK, July.

Sue Daly / Black-face Blenny (Tripterygion delaisi), male. Channel Islands, UK, June.

Sue Daly / Black faced blenny (Tripterygion delaisi) resting on rock, Channel Isles, UK, August