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Hydrophis semperi, commonly known as the Lake Taal snake, [1] [2] Garman's sea snake, [3] the Philippine freshwater sea snake, [4] and the Luzon sea snake, [5] is a rare species of venomous sea snake found only in a single lake on the island of Luzon in the Philippines.
Taal Lake is also home to one of the world's rarest sea snakes, Hydrophis semperi. This particular species is only one of two "true" sea snake (Hydrophiinae) species that are known to live entirely in freshwater (the other is Hydrophis sibauensis from the Sibua River, Borneo, Indonesia [14] [15] [16]).
Currently, around 36 species are recognized as being valid. [1] Systematics and classification ... Lake Taal snake, Garman's sea snake, Philippine freshwater sea ...
At one time, more than 80 different species of fish were found to inhabit the river's waters, either as a migratory channel or as a permanent residence. This included Taal Lake's now-extinct population of bull sharks (Carcharhinus leucas). [9] [10] The map of Taal Lake and Pansipit River with the towns separated by the river.
Boas include some of the world's largest snakes, with the green anaconda of South America being the heaviest and second-longest snake known; in general, adults are medium to large in size, with females usually larger than the males. Six subfamilies comprising 15 genera and 54 species are currently recognized. [3]
The species has 25–31 scale rows around its neck, 33–38 around its midbody, and ventrals number 295–362, and are distinct throughout and about twice as broad as adjacent body scales. Its color is yellowish or yellowish-green above; the dorsal scales are edged with black, and 41–46 narrow black bands encircle the body; the bands are ...
Taal Volcano (IPA:; Tagalog: Bulkang Taal) is a large caldera filled by Taal Lake in the Philippines. [1] Located in the province of Batangas about 50 kilometers (31 mi) south of Manila, the volcano is the second most active volcano in the country with 38 recorded historical eruptions, all of which were concentrated on Volcano Island, near the middle of Taal Lake. [3]
S. tawilis populations are only found in Taal Lake in the Batangas province on the island of Luzon in the Philippines. Taal Lake is the third-largest lake in the Philippines and is located in the caldera of an ancient volcano. [7] It has an area of about 24,356.4 hectares (60,186 acres) and lies at nine municipalities and two cities.