Astralium haematragum (species of turban shell)
Scientific name for a marine gastropod; primarily used in biological or shell-collecting contexts.
The Astralium haematragum is a type of sea snail found on rocky shores in the intertidal zone.
Katakana spelling is standard for this species name; the kanji form 裏渦貝 is rare and mainly used in taxonomic contexts.
Kanji spelling is uncommon; the word is usually written in kana.
The name is composed of 裏 (ura, 'back/reverse') + 渦 (uzu, 'whorl/swirl') + 貝 (kai, 'shell'), likely referring to the shell's shape. The exact derivation is uncertain.