WebFeb 10, 2011 · Although whales lack external hind legs (except as rare teratologies), they do have internal rudiments of the hind limbs and pelvic girdle, as I was reminded during a recent visit to my and Jerry’s alma … WebFeb 7, 2013 · The blue whale—190 tonnes in weight and beautifully adapted for swimming—is a placental mammal. The mammal bit means that mothers nourish their babies with milk after they’re born.
WHALES
Whales have two flippers on the front, and a tail fin. These flippers contain four digits. Although whales do not possess fully developed hind limbs, some, such as the sperm whale and bowhead whale, possess discrete rudimentary appendages, which may contain feet and digits. See more Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. As an informal and colloquial grouping, they correspond to large members of the infraorder Cetacea, i.e. all cetaceans … See more Phylogeny The whales are part of the largely terrestrial mammalian clade Laurasiatheria. Whales do not form a clade or order; the infraorder Cetacea includes dolphins and porpoises, which are not considered whales in the … See more Whaling Whaling by humans has existed since the Stone Age. Ancient whalers used harpoons to spear the bigger … See more The word "whale" comes from the Old English hwæl, from Proto-Germanic *hwalaz, from Proto-Indo-European *(s)kwal-o-, meaning "large sea fish". The Proto-Germanic *hwalaz is also the source of Old Saxon hwal, Old Norse hvalr, hvalfiskr, See more Anatomy Whales have torpedo-shaped bodies with non-flexible necks, limbs modified into flippers, non … See more Foraging and predation All whales are carnivorous and predatory. Odontocetes, as a whole, mostly feed on fish See more • List of individual cetaceans • Whaling in Japan See more WebThese fins serve both as a stabilizer and a rudder. Five digits for toothed whales and right whales, four for rorquals: some are very long, with many more phalanges than in land mammals. The bones of the hand are embedded in a fibrous, rigid and resistant tissue and do not appear at the surface of the skin. The hind limbs of whales have ... cynthia sasse
All About Baleen Whales - Physical Characteristics - SeaWorld
WebAs embryos, whales have tiny back limbs which disappear before birth. How did whales and dolphins evolve. WDC experts explain. Hippos are the closest living relatives of whales, but they are not the ancestors of … WebThe reproductive system of whales is proportional to the overall size of these giants. The penis of some baleen whales can reach 3 metres long. Right whales have the largest testicles in the animal kingdom, reaching a combined mass of 1,000 kg, which corresponds to 2% of their total weight. Despite being generally smaller than their baleen ... WebDec 1, 2010 · Blubber, blowholes and flukes are among the hallmarks of the roughly 80 species of cetaceans (whales, dolphins and porpoises) alive today. But, because they are mammals, we know that they must ... biltmore towels reviews