I saw many sea birds, so I'll introduce sea birds at this cruising on several entries.
At first, Shearwaters.
I saw three seawaters: White-faced Shearwater (Calonectris leucomelas), Short-tailed Shearwater (Puffinus tenuirostris), and Pale-footed Shearwater (Puffinus carneipes).
White-faced shearwaters were saw early to mid-October. Their assemblages were seen many times.
Short tailed sheawaters' assemblages were smaller than White-faced's one and a Pale-footed Shearwater was seen one of this assemblage (no photo).
Fulmars (Fulmarus glacialis) were seen in offshore, and the assemblage contained over 100 individuals.
Photos in Tomakomai, Hokkaido.