Cetacea Whale Stamp Ocean Fauna Marine Life Souvenir Sheet of 4 Stamps Mint NH

Description: Cetacea Whale Stamp Ocean Fauna Marine Life Souvenir Sheet of 4 Stamps Mint NH Cetacea Whale Ocean Fauna Marine Life Souvenir Sheet of 4 Stamps Mint NHCetaceans (/sɪˈteɪʃəns/) (from Latin: cetus, lit. 'whale', from Ancient Greek: κῆτος, translit. kētos, lit. 'huge fish') are aquatic mammals constituting the infraorder Cetacea. There are around 89 living species, which are divided into two parvorders. The first is the Odontoceti, the toothed whales, which consist of around 70 species, including the dolphin (which includes killer whales), porpoise, beluga whale, narwhal, sperm whale, and beaked whale. The second is the Mysticeti, the baleen (from Latin: balæna, lit. 'whale') whales, which have a filter-feeder system, and consist of 15 species divided into 3 families, and include the right whale, bowhead whale, rorqual, pygmy right whale, and gray whale. The ancient and extinct ancestors of modern whales (Archaeoceti) lived 53 to 45 million years ago. They diverged from even-toed ungulates; their closest living relatives are hippopotamuses and others such as camels and pigs. They were amphibious, and evolved in the shallow waters that separated India from Asia. Around 30 species adapted to a fully oceanic life. Baleen whales split from toothed whales around 34 million years ago. The smallest cetacean is Maui's dolphin, at 1 m (3 ft 3 in) and 50 kg (110 lb); the largest is the blue whale, at 29.9 m (98 ft) and 173 t (381,000 lb). Baleen whales have a tactile system in the short hairs (vibrissae) around their mouth; toothed whales do not have vibrissae. Cetaceans have well-developed senses—their eyesight and hearing are adapted for both air and water. They have a layer of fat, or blubber, under the skin to maintain body heat in cold water. Several species exhibit sexual dimorphism. Two external forelimbs are modified into flippers; two internal hindlimbs are vestigial. Cetaceans have streamlined bodies: they can swim very quickly, with the killer whale able to travel at 56 kilometres per hour (35 mph) in short bursts, the fin whale able to cruise at 48 kilometres per hour (30 mph), dolphins able to make very tight turns at high speeds, and some species diving to great depths.Fast & Free Shipping within U.S.A. We Care for your order, Pack it carefully and ship it within 24 hours. Satisfaction Guaranteed! Please explore our store for more stamps, souvenir sheets, post-office collectibles and philately books and pre-philatelic items: meditative.philately

Price: 19.65 USD

Location: Round Top, New York

End Time: 2024-09-15T16:09:56.000Z

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