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In biology, any group of fish that stay together for social reasons are shoaling, and if the group is swimming in the same direction in a coordinated manner, they are schooling. [1] In common usage, the terms are sometimes used rather loosely. [1] About one quarter of fish species shoal all their lives, and about one half shoal for part of ...
Aipysurus duboisii, also known commonly as Dubois' sea snake and the reef shallows sea snake, is a species of extremely venomous snake in the subfamily Hydrophiinae of the family Elapidae. Its geographic range includes Papua New Guinea , New Caledonia and the northern, eastern and western coastal areas of Australia , that is the Coral Sea ...
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 snake Temporal range: Oligocene – Recent Pre๊ ๊ O S D C P T J K Pg N Yellow-bellied sea snake (Hydrophis platurus) on a Costa Rica beach Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Suborder: Serpentes Superfamily: Elapoidea Family: Elapidae Groups included Hydrophiinae Laticaudinae Range of sea snakes shown in lime ...
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.
A species was first described by Bernard Germain de Lacépède in 1804, assigning it to a new genus Aipysurus. [2] A name published by John Edward Gray, Aipysurus jukesii, is regarded as a synonym for this species. [4] Currently, two subspecies are recognized, including the nominotypical subspecies described below. [5]
• 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]
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 ...