Jordi Chias / Bryde's whale (Balaenoptera edeni) and Common dolphins (Delphinus delphis) chasing small fish offshore. Santa Maria Island, Azores, Atlantic Ocean. Third Place in the Underwater Category of the Por El...

Todd Pusser / Cuviers beaked whale {Ziphius cavirostris} breaching, Ligurian Sea, Italy.

Todd Pusser / Female Dense beaked whales {Mesoplodon densirostris} underwater, Caribbean.

Todd Pusser / Female Dense beaked whale {Mesoplodon densirostris} surfacing, Bahamas, Caribbean.

Flip Nicklin / Bottlenose Whale (Hyperoodon ampullatus) cow and calf surfacing, Nova Scotia, Canada

Todd Pusser / Breaching Cuvier's beaked whale {Ziphius cavirostris} Atlantic, USA

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) hoisted in air, prior to necropsy to determine reason for death. Tenerife, Canary Islands. 2015.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) washed up dead on beach, man standing in water looking at whale, prior to necropsy to determine reason for death. Tenerife, Canary Islands. 2015...

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) blowhole and beak at water surface. El Hierro, Canary Islands.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) dorsal fin at surface. El Hierro, Canary Islands.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) male, dorsal fin and scars on body. El Hierro, Canary Islands.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) male, blowhole and beak, scars on body. El Hierro, Canary Islands.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) male, blowhole and scars on body. El Hierro, Canary Islands.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) male, scars on body visible above water surface. El Hierro, Canary Islands.

Sylvain Cordier / Spinner dolphin (Stenella longirostris), near the beach, Socotra Island UNESCO World Heritage Site, Yemen.

Nick Upton / Common dolphin (Delphinus delphis) surfacing near a Dolphin and Whale watching boat off Lagos, Algarve, Portugal, July 2013.

Nick Upton / Large pod of Common dolphins (Delphinus delphis) surfacing near a Dolphin and Whale watching boat off Lagos, Algarve, Portugal, July 2013.

Cheryl-Samantha Owen / Model of Cuvier's beaked whale (Ziphius cavirostris) in the new museum at Bird Island, Lambert's Bay, South Africa. October 2014.

Rebecca Robinson / Illustration of the diving behaviour of Shepherds Beaked Whale (Tasmacetus shepherdi).

Rebecca Robinson / Illustration of the diving behaviour of a Sowerby's Beaked Whale (Mesoplodon bidens).

Rebecca Robinson / Illustration of the diving and breaching behaviour of an Arnoux's beaked whale (Berardius arnuxii).

Rebecca Robinson / Illustration of the diving behaviour of a Strap-Toothed Whale (Mesoplodon layardii).

Rebecca Robinson / Illustration of the diving behaviour of Trues Beaked Whale (Mesoplodon mirus).

Rebecca Robinson / Illustration of the blow and diving behaviour of Gervais Beaked Whale (Mesoplodon europaeus).

Rebecca Robinson / Illustration of Deraniyagalas beaked whale (Mesoplodon hotaula).

Rebecca Robinson / Illustration of the surface profile with blow and diving behaviour of North Atlantic Bottlenose Whale (Hyperoodon ampullatus).

Rebecca Robinson / Illustration of the surface profile with blow and diving behaviour of Cuviers Beaked Whale (Ziphius cavirostris).

Rebecca Robinson / Illustration of the surface profile with blow and diving behaviour of Bairds Beaked Whale (Berardius bairdii).

Rebecca Robinson / Illustration of the surface profile with blow and diving behaviour of the Indo-Pacific Beaked Whale (Indopacetus pacificus).

Rebecca Robinson / Illustration of the surface profile with blow and diving behaviour of Hubbs Beaked Whale (Mesoplodon carlhubbsi).

Rebecca Robinson / Illustration of the surface profile with blow and diving/breaching behaviour of Hectors Beaked Whale (Mesoplodon hectori) male.

Rebecca Robinson / Illustration of the surface profile with blow and diving/breaching sequence of Southern Bottlenose Whale (Hyperoodon planifrons).

Rebecca Robinson / Illustration of Blainvilles Beaked Whale / Atlantic Beaked Whale (Mesoplodon densirostris) surface profile with blow and dive sequence.

Rebecca Robinson / Illustration of the dive sequence of Andrew's beaked whale (Mesoplodon bowdoini).

Rebecca Robinson / Illustration of the dive sequence of Ginkgo-Toothed Beaked Whale (Mesoplodon ginkgodens).

Rebecca Robinson / Illustration of the dive sequence of Stejnegers Beaked Whale (Mesoplodon stejnegeri).

Rebecca Robinson / Illustration of the dive sequence of Pygmy Beaked Whale (Mesoplodon peruvianus).

Rebecca Robinson / Illustration of the dive sequence of Perrins Beaked Whale (Mesoplodon perrini).

Rebecca Robinson / Illustration of the dive and breach sequence of Grays Beaked Whale (Mesoplodon grayi).

Yumiko Wakisaka / Pygmy Beaked Whale (Mesoplodon peruvianus)

Yumiko Wakisaka / Perrin's Beaked Whale (Mesoplodon perrini)

Yumiko Wakisaka / True's Beaked Whale (Mesoplodon mirus)

Yumiko Wakisaka / Strap-toothed Whale (Mesoplodon layardii)

Yumiko Wakisaka / Stejneger's Beaked Whale (Mesoplodon stejnegeri)

Yumiko Wakisaka / Spade-toothed Whale (Mesoplodon traversii)

Yumiko Wakisaka / Sowerby's Beaked Whale (Mesoplodon bidens)

Yumiko Wakisaka / Southern Bottlenose Whale (Hyperoodon planifrons)

Yumiko Wakisaka / Shepherd's Beaked Whale (Tasmacetus shepherdi)

Yumiko Wakisaka / Bottlenose Whale (Hyperoodon ampullatus)

Yumiko Wakisaka / Arch-beaked Whale (Mesoplodon carlhubbsi)

Yumiko Wakisaka / Hector's Beaked Whale (Mesoplodon hectori)

Yumiko Wakisaka / Gray's Beaked Whale (Mesoplodon grayi)

Yumiko Wakisaka / Ginkgo-toothed Beaked Whale (Mesoplodon ginkgodens)

Yumiko Wakisaka / Gervais's Beaked Whale (Mesoplodon europaeus)

Yumiko Wakisaka / Cuvier's Beaked Whale (Ziphius cavirostris)

Yumiko Wakisaka / Indo-pacific Beaked Whale (Indopacetus pacificus)

Yumiko Wakisaka / Dense Beaked Whale (Mesoplodon densirostris)

Yumiko Wakisaka / Baird's Beaked Whale (Berardius bairdii)

Yumiko Wakisaka / Arnoux's Beaked Whale (Berardius arnuxii)

Yumiko Wakisaka / Andrew's Beaked Whale (Mesoplodon bowdoini)

Rebecca Robinson / Illustration of Deraniyagala's beaked whale (Mesoplodon hotaula) surface profile with calf.

Rebecca Robinson / Illustration of a female Spade-toothed Whale (Mesoplodon traversii)

Hiroya Minakuchi / Arch-beaked Whale (Mesoplodon carlhubbsi) skull

Hiroya Minakuchi / Ginkgo-toothed Beaked Whale (Mesoplodon ginkgodens) skull

Michael Pitts / Bairds Beaked Whale (Beadius bairdii) with scars from cookie cut shark bites, Hawaii, Pacific.

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whales(Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable male

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whales(Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico,

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable female

Mark Carwardine / Pygmy / Lesser / Peruvian beaked whale (Mesoplodon peruvianus) Extremely rare photograph of live animal at sea, near San Diego island, Sea of Cortez (Gulf of California), Mexico, Probable male

Mark Carwardine / Aerial view of Beaked whale - almost certainly Peruvian / Lesser beaked whale (Mesoplodon peruvianus) (virtually no confirmed records of sightings in the wild) Sea of Cortez (Gulf of California), Baj...

Mark Carwardine / Skull of Lesser / Peruvian beaked whale, Peru {Mesoplodon peruvianus}

Toby Roxburgh / Scientists from the Welsh Marine Environmental Monitoring team and ranger from Kenfig Nature Reserve looking at the carcass of Sowerby's Beaked Whale (Mesoplodon bidens), washed up on the coast near P...

Toby Roxburgh / Scientist from the Welsh Marine Environmental Monitoring team dissecting the carcass of Sowerby's Beaked Whale (Mesoplodon bidens) washed up on beach near Porthcawl to try to determine the cause of de...

Toby Roxburgh / Scientists from the Welsh Marine Environmental Monitoring team photographing the carcass of Sowerby's Beaked Whale (Mesoplodon bidens) washed up on beach near Porthcawl to try to determine the cause o...

Toby Roxburgh / Scientist from the Welsh Marine Environmental Monitoring team dissecting the carcass of a Sowerby's Beaked Whale (Mesoplodon bidens) washed up on a beach in order to try to help determine the cause of...

Toby Roxburgh / Scientists from the Welsh Marine Environmental Monitoring team dissecting the carcass of a Sowerby's Beaked Whale (Mesoplodon bidens) washed up on a beach in order to try to help determine the cause o...

Toby Roxburgh / Scientist from the Welsh Marine Environmental Monitoring team and ranger from Kenfig Nature Reserve looking at the carcass of a Sowerby's Beaked Whale (Mesoplodon bidens), washed up on the coast near...

Tim Laman / Baird's beaked whales (Berardius bairdii). Monterey Bay, California.

Tim Laman / Baird's beaked whales (Berardius bairdii). Monterey Bay, California.

Tim Laman / Baird's beaked whales (Berardius bairdii). Monterey Bay, California.

Tim Laman / Baird's beaked whales (Berardius bairdii). Monterey Bay, California.

Flip Nicklin / Spinner Dolphin (Stenella longirostris) group video-taped by Jan Ostman-Lind in underwater view boat, Hawaii

Tui De Roy / Cuvier's Beaked Whale (Ziphius cavirostris) adult underwater in deep inter-island waters near Baltra Island, Galapagos Islands, Ecuador

Todd Pusser / Female Dense beaked whale {Mesoplodon densirostris} surfacing, Bahamas, Caribbean.

Todd Pusser / Cuviers beaked whale {Ziphius cavirostris} spy hopping, Ligurian Sea, Italy.

Todd Pusser / Male Cuviers beaked whale {Ziphius cavirostris} surfacing, Mediterranean Sea.

Todd Pusser / Cuviers beaked whale {Ziphius cavirostris} surfacing, Ligurian Sea, Italy.

Todd Pusser / Cuviers beaked whale {Ziphius cavirostris} surfacing, with scars on back, Ligurian Sea, Italy

Todd Pusser / Male and female Dense beaked whale {Mesoplodon densirostris} surfacing, Caribbean.

Todd Pusser / Cuvier's beaked whale back profile {Ziphius cavirostris}, Cape Hatteras, North Carolina