Richard Robinson / Grey Unicornfish (Naso caesius) and Sleek Unicorn fish (Naso hexacanthus ) school at Banc Lorne, New Caledonia.

Nick Upton / British Divers Marine Life Rescue (BDMLR) vet Darryl Thorpe takes a blood sample from an injured grey seal pup (Halichoerus grypus) 'Jenga', at BDMLR seal pup treatment facility before its transfer to...

Nick Upton / British Divers Marine Life Rescue vet Darryl Thorpe inspecting the body of Grey seal pup (Halichoerus grypus) 'Jenga' for injuries at BDMLR seal pup treatment facility, before its transfer to the Corn...

Nick Upton / British Divers Marine Life Rescue vet Darryl Thorpe taking a blood sample from an injured grey seal pup (Halichoerus grypus) 'Jenga' in a cubicle at a BDMLR seal pup treatment facility before its tran...

Nick Upton / British Divers Marine Life Rescue vet Darryl Thorpe cleaning a bite wound on the flipper of a grey seal pup (Halichoerus grypus) 'Jenga' with antiseptic in a cubicle at a BDMLR seal pup treatment faci...

Nick Upton / British Divers Marine Life Rescue vet Darryl Thorpe and animal medic Michelle Clement releasing an injured Grey seal pup (Halichoerus grypus) 'Jenga' into a cubicle at a BDMLR seal pup treatment facil...

Nick Upton / British Divers Marine Life Rescue veterinarian Darryl Thorpe using antibiotic spray on a bite wound on the flipper of a Grey seal pup (Halichoerus grypus) 'Jenga' in a cubicle at a BDMLR seal pup trea...

Pascal Kobeh / School of Yellowback fusiliers (Caesio xanthonota) and Bluekeel unicornfish (Naso hexacanthus) Madagascar. Indian Ocean.

Robin Chittenden / Sign asking dog walkers to keep their dogs on the lead to avoid injury to wildlife in Thorpe Marshes NWT reserve, Norfolk, UK. May.

Georgette Douwma / Surgeonfish, composite image on black background, Yellowtail tang (Zebrasoma xanthurum), Powder-blue surgeonfish (Acanthurus leucosternon), Elongate surgeonfish (Acanthurus mata), Striped surgeonfish...

Georgette Douwma / Blacktongue unicornfish (Naso hexacanthus) composite image showing variation in marking on black background, Maldives, Indian Ocean.

Georgette Douwma / Surgeonfish composite image on black background, Bluespine surgeonfish (Naso unicornis), Striped surgeonfish (Acanthurus lineatus), Sailffin tang (Zebrasoma veliferum) juvenile, Mimic surgeonfish (Aca...