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Lutra lutra exhibited a mean hair density of about 70 000 hairs/cm2 (whole body, appendages excepted), the mean individual density ranging from about 60 000 to 80 000 hairs/cm2. The dominant hair type were secondary hairs (wool hairs), the hair coat comprising only 1.26% of primary hairs (PH).
found sea otters had hair density of about 33 000 hairs/cm2 on the back and 45000 hairs/cm2 on the belly. According to Williams et al. (1992), the sea otter has about 165000 hairs/cm2 on the fore feet and 78000 hairs/cm2 on the back. Further data on hair density in the sea otter at the back are: 100 000 hairs/cm2 (Scheffer in Kenyon 1969),
Adult sea otters typically weigh between 14 and 45 kg (30 and 100 lb), making them the heaviest members of the weasel family, but among [3] the smallest marine mammals. 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.
Otters fur is about 1,000 times more dense than human hair. But it wouldn’t do them any good if it were smooth and perfectly combed. Otters want their hair as tangled as possible, so that the air bubbles they blow into their pelts can’t get out.
The sea otter is covered in dense fur that consists of two layers. The short, more dense, under layer of fur can have as many as 1 million hairs per square inch, which is the densest of any mammal. Humans only have about 100,000 hairs in total on our heads.
25 Σεπ 2015 · California sea otters have the densest fur of any mammal on Earth, allowing them to live in cold water even though they don’t have blubber like whales.
1 Σεπ 2010 · The hair density of adult Eurasian otters Lutra lutra (Linnaeus, 1758) and sea otters Enhydra lutris (Linnaeus, 1758) was analysed using skin samples taken from frozen carcasses.
