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Telescopium telescopium : ウィキペディア英語版 | Telescopium telescopium
''Telescopium telescopium'', or "Horn snail," is a species of marine gastropod mollusk in the family Potamididae. It is found in mangrove forests throughout the coastlines of the Indian Ocean. ==Description== This large snail has an 8–15 cm tall, conical shell strongly reminiscent of an ice cream cone. ''T. telescopium'' is commonly seen in Southeast Asian mangroves, on mud, sometimes in the hundreds covering a large area. It is also called 'Rodong' or 'Berongan' in Malay. The largest of Horn snails, the heavy conical shell is actually beautifully marked but the patterns are usually hidden by mud and other encrusting animals. The outer lip is thin and not flared. Operculum small and circular. The animal is velvety black with a highly extendible proboscis. There is a third eye on its mantle margin, in addition to a pair of eyes at the tentacles. It can stay out of water for long periods of time. ''Telescopium'' feeds on detritus and algae from the mud surface at low tide by sucking using its proboscis.
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