Technical Comments Acanthaster: A Rarity in the Past? By Thomas F. Dana See allHide authors and affiliations Science 28 Aug 1970:Vol. 169, Issue 3948, pp. 894DOI: 10.1126/science.169.3948.894 Thomas F. DanaFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF Download PDF You are using an old browser, click here to download PDF PDF Container View PDF Extract