Ключевые слова: ammonite, aquatic, beautiful, black background, clam, close, closeup, conch, conchifera, decor, design, echinoderm, isolated, marine, marine borer, marine science, mollusc, mollusca, molluscan, mollusk, nature, ocean, ocean science, oceanic, oceanics, oceanology, ostracean, oyster, scallop, sea shell, sea shells, seashell, shell, shellfish, souvenir,