The Sint Maarten Pejerry Melanorhinus boekei (CAS) is a freshwater fish known solely from Sint Maarten.
A pseudoscorpion Amblyolpium martinensis (p. 20 of Naturalis pdf file) is an invertebrate known so far only from Sint Maarten.
plants unique to Sint Maarten are a lidflower Calyptranthes boldinghii
and a legume Galactia
Sint Maarten is included in the Caribbean Islands biodiversity hotspot (CEPF).
The island of Saint Martin is split between the Netherlands and France. Additional species known from the island as a whole include the Bearded Anole Anolis pogus (Wildlife of Saint Martin), the Saint Martin Skink Spondylurus martinae (caribherp pdf file), and a longhorned beetle Solenoptera chalumeaui (SEAG).