List of mammals of Saint Martin (island)

[1] The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature: Some species were assessed using an earlier set of criteria.

Species assessed using this system have the following instead of near threatened and least concern categories: Sirenia is an order of fully aquatic, herbivorous mammals that inhabit rivers, estuaries, coastal marine waters, swamps, and marine wetlands.

The order Cetacea which includes whales, dolphins and porpoises, are the mammals most fully adapted to aquatic life which enable them to survive like fish in the water.

Well over 250 species of carnivorans, they fill up the top ranks of any food web, and helps to control the population of herbivores.

They are economically important animals, where most of them are pests and invasive species in human habitations.