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| shelled snails text index | photo index |
| Phylum Mollusca > Class Gastropoda > Family Littorinidae |
| Black-mouth
mangrove periwinkle snail Littoraria melanostoma Family Littorinidae updated Aug 2020 Where seen? This rather large periwinkle is sometimes seen on mangrove tree trunks and sometimes even leaves. Usually seen alone. Features: 2-3cm. Shell conical with sharp tip, smooth, yellow with fine spiral pattern of brown dots. Sometimes the shell is bleached white. Shell opening with black edge. "Melanostoma" means "black mouth". Operculum thin, circular, dark brown, made of a horn-like material. The animal is yellowish with short fat tentacles. Baby Black-mouths: According to Tan, it releases egg capsules into the sea every two weeks during the spring tides when the sea level rises to reach it. |
 Berlayar Creek, Jan 09 |
 Black edge on the shell opening. Berlayar Creek, Jan 09 |
 Sungei Buloh Wetland Reserve, Mar 05 |
| Black-mouth mangrove periwinkle snails on Singapore shores |
On wildsingapore
flickr
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| Other sightings on Singapore shores |
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