Tiger sharks are found in tropical and subtropical regions around the world. Many of them range around Okinawa, they are a large and dangerous shark over 4 meters in length.
However, the reproductive mode of this species has not yet been revealed and has long remained a mystery. This time with the cooperation of Yaeyama Fisheries Cooperatives, results of investigating the uterus and embryo from netted tiger sharks suggests that tiger sharks absorb nutrients from a fluid high in organic matter that exists within the uterus.
Features of the reproductive mode in the tiger shark differ from other sharks and rays, it is believed to be a new reproductive mode of sharks.

Authors

Jose I. Castro (NOAA), Keiichi Sato, Ashby B. Bodine (Clemson Univ).(Bold letters：Foundation staff member)

Title

A novel mode of embryonic nutrition in the tiger shark, Galeocerdo cuvier

Journal

Marine Biology Research, 2015

DOI

10.1080/17451000.2015.1099677.