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A study of tagged tiger sharks has revealed some surprising facts about their migratory habits, showing them to be similar to those of birds, turtles, and some marine mammals.

In this first-ever continuous two-year (or more) tracking of tagged tiger sharks, scientists discovered that the animals make yearly round-trip journeys of over 4,600 miles between the extremely distinct environments of Caribbean coral reefs and the open ocean of the mid-North Atlantic. Previously, they were believed to be a largely coastal shark. The tagged species were also observed returning to the same area in the Caribbean each year for the winter season.

One animal in the study, nicknamed Harry Lindo, swam over 27,000 miles, which is the longest documented distance for a tiger shark and possibly for any shark species.

Read more about the tiger shark's migration patterns here.