Skomal, G. B., Zeeman, S. I., Chisholm, J. H., Summers, E. L., Walsh, H. J., McMahon, K. W., & Thorrold, S. R. (2009). Transequatorial Migrations by Basking Sharks in the Western Atlantic Ocean. Current Biology, 19(12), 1019–1022. doi:10.1016/j.cub.2009.04.019