2025年1月18日 · The sperm whale is the most evolutionarily modified of the toothed whales. The head constitutes one-third of the total body length and, it is estimated, greater than a third of the body weight. The lower jaw is usually equipped with 36 to 50 large conical teeth ; the upper jaw holds a variable number of vestigial teeth that do not erupt.

2021年12月29日 · Sperm whales have between 36-60 teeth–all located on their bottom jaw (mandible). Sperm whales very rarely have teeth in their upper jaw. Instead, their upper jaw is full of sockets that the teeth on the bottom fit into.

The sperm whale's ivory-like teeth were often sought by 18th- and 19th-century whalers, who used them to produce inked carvings known as scrimshaw. 30 teeth of the sperm whale can be used for ivory. Each of these teeth, up to 20 cm (8 in) and 8 cm (3 in) across, are hollow for the first half of their length.

Sperm whales have conical teeth on their long, narrow, lower jaw. The teeth fit neatly into sockets in the upper jaw, which has no teeth. This arrangement is a perfect adaptation for slurping up soft-bodied squids—giant or otherwise.

2021年11月29日 · The sperm whale has the largest teeth of any whale species. Sperm whales only have teeth on their lower jaw — their upper jaw has sockets for teeth to rest in – and their teeth can reach incredible lengths.

Sperm whale teeth are composed of ivory, a dense, hard tissue made primarily of dentin, with a layer of cementum on the surface and sometimes a thin layer of enamel at the tips. Their teeth are uniquely adapted for grasping large, slippery prey such as squid deep in the ocean.

2021年2月5日 · 11. Sperm Whales Possess the Largest Teeth of Any Whale. The sperm whale’s cone-shaped teeth are remarkably large, measuring between 10 and 20 cm (3.94-7.88 inches) in length and weighing up to 1 kilogram (2.2 pounds) each.

2025年1月7日 · Sperm whales have 36-60 teeth – all in their lower jaw (mandible). Sperm whales have very few teeth in their upper jaws. Instead, their upper jaw is filled with sockets where the bottom teeth fit.

A sperm whale’s teeth along its bottom jaw are about 18 to 20 cm long (7.1 to 7.9 inches), fitting into sockets along the underside of the palate. The upper teeth of a sperm whale never grow out of its upper jaw.

Sperm whales have the largest teeth of any animal, with some teeth weighing up to 2.2 pounds. There are 40 – 52 teeth in the lower jaw, while the teeth in the upper jaw rarely break through the gums. While whales are known for their strong social bonds and care for their young, they do not form lifelong mating partnerships.