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

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris). Punta Rasca, Tenerife. The yellow patches are caused by the presence of microalgae.

Sergio Hanquet / Gervais' beaked whale (Mesoplodon europaeus) El Hierro, Canary Islands.

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.

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 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 Stejneger? 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 Perrin? Beaked Whale (Mesoplodon perrini).

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

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

Rebecca Robinson / Illustration of Deraniyagala? 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 Baird? 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 Hector? 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 Blainville? Beaked Whale / Atlantic Beaked Whale (Mesoplodon densirostris) surface profile with blow and dive sequence.

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)

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

Martin Camm / Carwardine / Illustration of True's beaked whale (Mesoplodon mirus) male, Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of True's beaked whale (Mesoplodon mirus) female, Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Strap-toothed / Layard's beaked whale (Mesoplodon layardii) Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Stejneger's / Bering Sea / North Pacific beaked whale (Mesoplodon stejnegeri) male, Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Southern / Antarctic bottlenose whale (Hyperoodon planifrons) Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Shepherd's beaked whale (Tamacetus shepherdi) Tasman beaked whale; Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Perrin's Beaked Whale (Mesoplodon perrini) Ziphidae; first found in May 1975 off California (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Longman's Beaked Whale (Indopacetus pacificus), Ziphidae (Wildlife Art Company).

Martin Camm / Carwardine / Hubbs' / Arch beaked whale (Mesoplodon carlhubbsi) Ziphiidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Hector's / New Zealand beaked whale (Mesoplodon hectori) male, Ziphiidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Gray's beaked whale (Mesoplodon grayi) Haast's beaked whale; male, Ziphiidae (Wildlife Art Company).

Martin Camm / Carwardine / Illustration of Gray's / Haast's beaked whale (Mesoplodon grayi) Ziphiidae (Wildlife Art Company).