2015年1月6日 · California sea otters (Enhydra lutris) — the frolicking mascots of the coast who draw visitors to aquariums in droves and who float among the kelp beds just beyond the surf line — have the densest fur of any mammal on Earth.

Unlike most marine mammals, the sea otter's primary form of insulation is an exceptionally thick coat of fur, the densest in the animal kingdom. Although it can walk on land, the sea otter is capable of living exclusively in the ocean. The sea otter inhabits nearshore environments, where it dives to the sea floor to forage.

2021年5月11日 · Instead of blubber, sea otters have the densest fur of any mammal. Their fur is so dense, there are about a million hairs in every square inch of their body. Besides just being extremely dense there are also two layers to their fur making their fur 1.5 inches thick when dry. Sea otter fur has an undercoat and a longer top guard coat.

2025年3月3日 · In short, sea otter fur is characterized by its exceptional density, its two-layered structure, and its remarkable water-resistance. Composed of two distinct types of hair – long, protective guard hairs and a dense, insulating undercoat – this fur is not just a covering; it’s the sea otter’s primary defense against the cold, harsh ...

2025年3月21日 · Otter fur is nothing short of extraordinary, possessing characteristics that set it apart from nearly every other animal on Earth. Primarily, the most significant fact about otter fur is its unparalleled density.

Most are small, with short ears and noses, elongated bodies, long tails, and soft, dense fur. There are 13 species in total, ranging from the small-clawed otter to the giant otter. Though...

The fur of all otters is fine, dense, and velvety. Like other mammals, otters have two types of fur: long, stout guard hairs, and a more dense arrangement of short, fine underhairs.

2025年3月6日 · In short, the quality of river otter fur is exceptional, owing to its unique structure and properties. It’s characterized by its dense, velvety texture, a result of having both a short, soft undercoat and a longer, more robust outer layer of guard hairs.

2022年10月1日 · The sea otter’s fur is very soft, extremely dense, and velvety to the touch. At a closer look, at a microscopic level, sea otter hair is covered with tiny barbs that cause the hairs to cling together tightly, so that the inner fur stays almost completely dry, keeping the sea otter’s skin dry and warm at all times.

2025年4月1日 · Russian, British, and American fur traders sought the luxurious fur of sea otters, their numbers plummeting from around 300,000 to 2,000 by the turn of the 1900s.