Alex Mustard / A shoal of Golden grey mullet (Liza aurata) swim in the surf breaking on the shore of El Hierro Island. Canary Islands, Spain. East Atlantic Ocean.

John Chan / Osprey (Pandion haliaetus) taking flight with a partially eaten Mullet (Mugilidae), Southern California, USA.

John Chan / Osprey (Pandion haliaetus) feeding on a Mullet (Mugilidae), Southern California, USA.

Michel Roggo / Striped mullet (Mugil cephalus) in Fanning Springs State Park, Florida, USA. March. Photographed for The Freshwater Project

Michel Roggo / Striped mullet (Mugil cephalus) at boundary of clear water of Fanning Springs and red water of the Suwannee River, Fanning Springs State Park, Florida, USA. March 2011. Photographed for The Freshwater...

Roger Powell / Osprey (Pandion haliaetus) male displaying by flying past with a Flathead grey mullet (Mugil cephalus) in its talons. Cedar Key, Levy County, Florida, USA April

Roger Powell / Osprey (Pandion haliaetus) male displaying by flying past with a Flathead grey mullet (Mugil cephalus) in its talons. Cedar Key, Levy County, Florida, USA April

Graham Eaton / Little Grebe (Tachybaptus ruficollis) on water with juvenile Grey Mullet (Chelon labrosus). Bangor, Gwynedd, Wales. December.

Graham Eaton / Little Grebe (Tachybaptus ruficollis) on water with juvenile Grey Mullet (Chelon labrosus). Bangor, Gwynedd, Wales. December.

Nick Upton / Thick-lipped grey mullet (Chelon labrosus) swimming, Los Gigantes harbour, Tenerife, May.

Nick Upton / Three Thick-lipped grey mullet (Chelon labrosus) swimming, Los Gigantes harbour, Tenerife, May.

Juan Carlos Munoz / Man rolling a cigarette, with Bokkom fish, a salted and dried Southern mullet (Liza richardsonii) fishes, Velddrif Village, Berg River, West Coast Peninsula, Western Cape province, South Africa, Septe...

Juan Carlos Munoz / Bokkom fish, a salted and dried Southern mullet (Liza richardsonii) fishes, Velddrif Village, Berg River, West Coast Peninsula, Western Cape province, South Africa, September 2012.

Jose B. Ruiz / Shoal of Thick-lipped grey mullet {Chelon labrosus}, Mediterranean. Spain

Jose B. Ruiz / Shoal of Thick-lipped grey mullet {Chelon labrosus} in the Mediterranean. Spain.

Jose B. Ruiz / Shoal of Thick-lipped grey mullet {Chelon labrosus}, Mediterranean.

Jose B. Ruiz / Shoal of Thick-lipped grey mullet {Chelon labrosus} Mediterranean. Spain.

Jose B. Ruiz / Thick-lipped grey mullet {Chelon labrosus} Mediterranean Spain

David Perpinan / Flathead grey mullet (Mugil cephalus) and Salema (Sarpa salpa) school swimming past the camera in the mouth of the Besos river. The fish enter and leave frame. Barcelona, Spain. October.

David Perpinan / Flathead grey mullet (Mugil cephalus) school swimming in the mouth of the Besos river. One fish enters the frame and then feeds on algae which is covering a rock. Barcelona, Spain. October.

David Perpinan / Flathead grey mullet (Mugil cephalus) and Salema (Sarpa salpa) school swimming past camera in the mouth of the Besos river. The fish enter and leave frame. Barcelona, Spain. October.

David Perpinan / Flathead grey mullet (Mugil cephalus) and Salema (Sarpa salpa) school swimming past camera in the mouth of the Besos river. The fish enter and leave frame. Barcelona, Spain. October.

Tui De Roy / Green turtle (Chelonia mydas), juvenile being cleaned by Grey mullet (Mugil cephalus) school in warm shallow water, Isabela Island, Galapagos, South America, Pacific Ocean.

David Fleetham / Fringelip mullet (Crenimugil crenilabis) feeding over coral reef, Bali, Indonesia.

Chris Shields / Illustration of Thick-lipped mullet (Chelon labrosus)

Doug Perrine / Striped mullet (Mugil cephalus), two feeding by surface skimming. Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Islands, USA.

Doug Perrine / Striped mullet (Mugil cephalus), two feeding by surface skimming. Sand Island, Midway Atoll National Wildlife Refuge, Papahanaumokuakea Marine National Monument, Northwest Hawaiian Islands, USA.

Willem Kolvoort / Grey mullets (Chelon sp) in the shallow reef of Cosmoledo Island, Seychelles, Indian Ocean