章节大纲













    • Method 1: Charter the Hokkaido University School of Fisheries Sciences Training Ship Ushio-maru and a local fishing boat to collect the larvae of Ammodytes sp. with a plankton net and its food that is plankton with a bottle sampler.

      Method 2: Conduct a three-year survey by measuring water temperature/salt content and seawater density every two weeks using an oceanographic device called a CTD.