Basking Sharks in the Gulf of Maine
Schools of up to 50 basking sharks (Cetorhinus maximus) were observed on the warm side of a persistent thermal front in the southern Gulf of Maine from early September through mid-October 2002. Aerial photographs showed a variety of schooling patterns, including echelon, cartwheel and milling formations. While the function of these aggregations remains unknown, they may represent group courtship behavior.
Wilson, S.G. Basking sharks (Cetorhinus maximus) schooling in the southern Gulf of Maine. Fisheries Oceanography 13:283-286. 2004.