Sea turtle, Fernando de Noronha, Brazil

They've got built-in helmets, a slow-and-steady vibe and zero interest in your deadlines.

Sea turtles, like this one photographed in Fernando de Noronha, Brazil, have been cruising Earth's oceans since before T-rex was a thing.

There are seven species of sea turtles: green, loggerhead, hawksbill, leatherback, Kemp's ridley, olive ridley and flatback.

Among them, the leatherback sea turtle is the largest, sometimes reaching almost 2 metres in length and weighing between 300 to 640 kilograms.

Each species has unique behaviours, diets and nesting patterns—yet all share a deep connection to coastal and marine environments.

Let's protect these ancient mariners—for the oceans, and for the future.