Cuvier's Beaked Whale

Fascinating facts about the Cuvier's Beaked Whale

• Cuvier's beaked whales recorded dives have reached depths of 2,992 m (9,816 ft) and durations of 222 minutes, the deepest and longest ever documented for any mammal. These extremes are made possible by physiological tricks like slowing the heart, conserving oxygen and tolerating crushing pressure, letting them hunt squid. This shows how evolution can push the limits of mammalian diving, revealing a hidden realm of ocean life.
• A single adult male can grow a pair of tusk-like teeth up to 8 cm long in the lower jaw, while females never break teeth through their gums. These teeth are thought to be used for dueling between males, a behavior reflected in the heavy scarring seen on older males. The scars act like a natural ID tag, letting researchers track individuals.
• Cuvier's beaked whales are truly global, inhabiting deep offshore waters over 1,000 m (3,300 ft) in every major ocean. Regional surveys estimate 80,000 individuals in the Eastern Tropical Pacific, nearly 1,900 off the U.S. West Coast, and more than 15,000 around Hawaii, suggesting a worldwide population in the tens of thousands.
• Naval sonar can trigger fatal strandings: a 2019 review linked mid-frequency active sonar to mass strandings where whales showed decompression-sickness signs, likely from abnormal dive patterns. After banning sonar exercises around the Canary Islands, no further strandings were recorded there, highlighting how human noise can directly disrupt the whales' delicate diving physiology.
• These whales feed almost exclusively on squid, stomach analyses of Pacific individuals showed cephalopods made up 98.0 % by number and 87.7 % by mass, with at least 37 different squid species identified.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia

At a glance

About the Cuvier's Beaked Whale

In the dark, mysterious depths of the ocean, the Cuvier's Beaked Whale glides effortlessly, its sleek, grey body undulating as it navigates the twilight zone with a quiet, enigmatic elegance. With each deliberate stroke of its powerful tail, it propels itself through the water, a master of the slow and stealthy hunt, using its sensitive melon to pinpoint the faint echoes of its deep-sea prey. As it rises occasionally to the surface, the whale's blunt, rounded head breaks the waves, a fleeting glimpse of a creature that remains one of the most elusive and captivating denizens of the deep.

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