Environmental context explains Lévy and Brownian movement patterns of marine predators. - Humphries NE; Queiroz N; Dyer JR; Pade NG; Musyl MK; Schaefer KM; Fuller DW; Brunnschweiler JM; Doyle TK; Houghton JD; Hays GC; Jones CS; et al. (Nature, 2010)