A large international team of marine scientists are trying to solve the mystery of why a large group of female hammerhead sharks have gathered in two French Polynesian atolls every summer of over the past decade. In their paper published in the journal Frontiers in Marine Science, the team describes their study of the sharks and discusses their theories on why they congregate.
Tuamotu Archipelago location in French Polynesia. Tikehau and Rangiroa Atoll. Tiputa pass, Location A. Tuheiava pass, Location B. Credit: Satellite imagery ©ESRI.A large international team of marine scientists are trying to solve the mystery of why a large group of female hammerhead sharks have gathered in two French Polynesian atolls every summer of over the past decade.
In this new endeavor, the scientists heard about female great hammerheads congregating in atolls in French Polynesia, and they began a research study to find the reason. Distinctive traits for S. mokarran identification fin morphology: 1) notches, 2) outgrowths, 3) truncated or shortened fins. distinctive for one season only: 1) white patches , 2) blisters, 3) scratches, 4) open wound or scars. ventral features: 1) black dots, 2) dark patches. Pre-Caudal length. Natural marks on fin-tips or body: 1) dark patches, 2) dark pattern of fin-tips, 3) black dots. Credit: Pictures from ©MPS and ©Thomas Pavy.
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