Nineteenth Century tools made from sharks’ teeth suggest that two species of shark used to populate the Central Pacific but are no longer present.
19世紀用鯊魚牙齒製作的工具,顯示2種鯊魚原本生活在中太平洋,現在卻已不復存在。
Using artefacts from museums, a team of US researchers found that spot-tail and dusky sharks used to inhabit the reefs surrounding the Gilbert Islands.


