Fig. 2From: Regional differences in oceanic migratory behavior of Japanese silver eel in waters with different vertical temperature gradientsEel release points and pop-up satellite archival tags (PSATs) pop-up points. Silver eels were released from three regions: A the Tokai region, B the Sea of Japan coastline, and C the Tohoku region. Red circles represent the release points of tagged eels and yellow triangles represent the pop-up points of PSATs. The labels on the contour lines indicate the water depth in meters (m)Back to article page