Cassis madagascariensis (emperor helmet snail) 1 : 無料・フリー素材/写真
Cassis madagascariensis (emperor helmet snail) 1 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Cassis madagascariensis Lamarck, 1822 - emperor helmet snail (oblique apical view) (public display, Bailey-Matthews Shell Museum, Sanibel Island, Florida, USA)The gastropods (snails & slugs) are a group of molluscs that occupy marine, freshwater, and terrestrial environments. Most gastropods have a calcareous external shell (the snails). Some lack a shell completely, or have reduced internal shells (the slugs & sea slugs & pteropods). Most members of the Gastropoda are marine. Most marine snails are herbivores (algae grazers) or predators/carnivores.From museum signage:"[The emperor helmet is the] largest helmet species and also one of the largest gastropods in the world, reaching around 35 cm (14 inches) in length. Thick, contrasting layers of dark-brown and alabaster colors make the emperor helmet one of the preferred shells for cameo carving. Living helmet shells feed on sea urchins and sand dollars."Classification: Animalia, Mollusca, Gastropoda, Cassidae---------------More info. at:en.wikipedia.org/wiki/Cassis_madagascariensis |
| 撮影日 | 2016-01-04 12:20:53 |
| 撮影者 | James St. John |
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