ISHIGAKI, Okinawa Prefecture--When underwater photographer Kazushige Horiguchi ... but had never seen the coral reef stretching so far. “I could feel the vitality of the coral,” said Horiguchi ...

Four monitoring sites in Shigeo Reef near Motobu Peninsula in Okinawa, Japan ... The eDNA analysis and underwater robot observations revealed different coral communities at each study site.

An underwater drone successfully collects a seawater sample above a coral reef (VIDEO) Okinawa Institute of Science and Technology (OIST) Graduate University This video is under embargo.