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.

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

Mark Carwardine / Humpback whale (Megaptera novaeangliae) diving below surface showing tail fluke with Red-necked phalaropes (Phalaropus lobatus) Southeast Alaska, USA August

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.

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

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.

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