Seashells. Yellow shells of unidentified sea snails. These shells are calcium-rich structures secreted by gastropod molluscs for protection. The animal can withdraw entirely into its shell when threatened. The chambers at the centre of the spiral are the oldest,with successively larger whorls being added as the animal grows | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gustoimages |
Bildgröße: | 3739 px × 5538 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |