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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 10 Where seen? This rather large periwinkle is sometimes seen on mangrove tree trunks and sometimes even leaves. Usually seen alone. Features: 2-3cm. Shell with a narrower tip, smooth, yellow with fine spiral pattern of brown dots. Sometimes the shell is bleached white. Shell opening with black patch. "Melanostoma" means "black mouth". Operculum dark brown. The animal is yellowish with short fat tentacles. 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. |
 Sungei Buloh Wetland Reserve, Mar 05 |
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 Kranji, Jan 09 |
Black-mouth mangrove periwinkle snails on Singapore shores
 Sungei Buloh Wetland Reserve, Mar 05 |
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 Seletar, Feb 02 |
 Lim Chu Kang, Aug 05 |
 Pasir Ris Park, Jul 04 |
more photos of black-mouth mangrove periwinkle snails on Singapore shores
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