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In a nautical sense, a bar is a shoal, similar to a reef: a shallow formation of (usually) sand that is a navigation or grounding hazard, with a depth of water of 6 fathoms (11 meters) or less. It therefore applies to a silt accumulation that shallows the entrance to or course of a river, or creek.
Sea snakes, or coral reef snakes, are elapid snakes that inhabit marine environments for most or all of their lives. They belong to two subfamilies, Hydrophiinae and Laticaudinae . Hydrophiinae also includes Australasian terrestrial snakes, whereas Laticaudinae only includes the sea kraits ( Laticauda ), of which three species are found ...
Aipysurus apraefrontalis, commonly known as the short-nosed sea snake or Sahul reef snake, is a species of venomous sea snake in the family Elapidae, which occurs on reefs off the northern coast of Western Australia. English herpetologist Malcolm Arthur Smith described the species in 1926 from a specimen collected on the Ashmore Reef.
Approximate world distribution of snakes. There are about 3,900 species of snakes, [46] ranging as far northward as the Arctic Circle in Scandinavia and southward through Australia. [27] Snakes can be found on every continent except Antarctica, as well as in the sea, and as high as 16,000 feet (4,900 m) in the Himalayan Mountains of Asia.
• Sea snake (bottom right) Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment. Only about 100 of the 12,000 extant reptile species and subspecies are classed as marine reptiles, including marine iguanas, sea snakes, sea turtles and saltwater crocodiles. [1]
Image Species Authority Common name Geographic range Aipysurus apraefrontalis: M.A. Smith, 1926: Short-nosed sea snake Western Australia Aipysurus duboisii: Bavay, 1869: Reef shallows sea snake; Dubois' sea snake coastal areas of Australia Aipysurus eydouxii (Gray, 1849) Spine-tailed sea snake; Marbled sea snake; Beaded sea snake
Geographic variation in the sea snake, Hydrophis ornatus (Gray) Proceedings of the Biological Society of Washington 60: 1–8. Rasmussen, A.R. 1989. An analysis of Hydrophis ornatus (Gray), H. lamberti Smith, and H. inornatus (Gray) (Hydrophiidae, Serpentes) based on samples from various localities, with remarks on feeding and breeding biology ...
Coral snakes are a large group of elapid snakes that can be divided into two distinct groups, the Old World coral snakes and New World coral snakes. There are 27 species of Old World coral snakes, in three genera (Calliophis, Hemibungarus, and Sinomicrurus), and 83 recognized species of New World coral snakes, in two genera (Micruroides and Micrurus).