Megalenhydris fue una nutria gigante que habitó las costas de Cerdeña durante el Pleistoceno. Aunque su esqueleto no está completo, es suficiente para deducir dos cosas; que era mucho mayor que cualquier nutria moderna, y que aparentemente estaba muy adaptada a un estilo de vida acuático, ya que su cola (de la que solo se conoce una parte) estaba aplanada dorsoventralmente, y su columna vertebral parece haber sido inusualmente flexible. Megalenhydris parece haber sido lo más cerca que las nutrias llegaron a convertirse en verdaderos monstruos marinos. Posiblemente se alimentaba de peces grandes y moluscos.
Megalenhydris was a gigantic otter that lived off the coasts of Sardinia during the Pleistocene. Although its skeleton is not complete, it is enough to deduce two things; it was much bigger than any modern otter, and it was apparently very well adapted to an aquatic lifestyle. Its tail (of which only part is known) seems to have been dorsoventrally flattened, and its backbone was very flexible. Megalenhydris seems to be the closest otters ever got to becoming true sea monsters. It probably fed on large fish and mollusks.
By the look of things it's not above taking a bite at poor old Dunk the Diver either! (who must have nerves of steel AND more lives than a cat to survive this particular day job).
Please allow me to compliment you on this evocation of an intriguingly unique species; I've long been intrigued by the "Walking Whales" and it's fascinating to see how close one of the otters came to following that path back to the sea.
So cool, and very unusual to get know of a prehistoric otter. The water-living old mammals that get most of the attention tend to be early cetaceans like Ambulocetus or Basilosaurus, so this is a really nice touch of variety. One nice thing to do would be an Odobenocetops.