Cuvier's Beaked Whale or Goose-beaked Whale or Ziphius * Cuvier-dolfyn * Ziphius Cavirostris

Walvis DolfynIts documented dives are the deepest and longest among whales, reaching 2,992 m (9,816 ft) and lasting 222 minutes. Although it lives in deep water, it is one of the most commonly seen beached whales.

Males and females mature at an average length of 5.8-6.9 m (19-22.5 ft) and 5.8-7.0 m (19-23 ft), respectively. They weigh between 2 and 3.5 tons.

Cuvier's beaked whales are the only mammals to have ever made the deepest and the longest dives ever recorded in history. The deepest dive ever recorded by a mammal was made by a Cuvier's beaked whale in 2014, when it submerged up to 9,816 feet (2,992 meters) off the coast of California. The longest dive ever (222 minutes) recorded for a mammal was made by a Cuvier's beaked whale in 2020, according to a study.

With an estimated population of well over 100,000, the Cuvier's beaked whale is one of the most widespread and numerous beaked whales.

The Cuvier's beaked whale appears to react negatively to sonar. Near naval sites where sonar may have been used, strandings and beachings are frequent occurrences.