The endangered Bermuda Petrel or Cahow (ARKive) was once thought extinct and breeds only in Bermuda. The Bermuda White-eyed Vireo Vireo griseus bermudianus (Bermuda Conservation) is an endemic subspecies. The Bermuda Towhee Pipilo naufragus (PBSW), the Bermuda Flicker Colaptes oceanicus (PBSW), the Bermuda Hawk Bermuteo avivorus (PBSW), and the Bermuda Saw-whet Owl Aegolius gradyi (PBSW) are extinct species that may have survived into historical times.
Bermuda Skink (ARKive)
is the sole reptile unique to the island.
Two species of freshwater fish are restricted to Bermuda: the Bermuda Killifish Fundulus bermudae (STRI) and the Lover's Lake Killifish Fundulus relictus (STRI). Marine fish known only from Bermuda include the Bermuda Chromis Chromis bermudae (Reef Builders), the Bermuda Anchovy Anchoa choerostoma (STRI), Bermuda Halfbeak Hemiramphus bermudensis (STRI), the Bermuda Silverstripe Halfbeak Hyporhamphus collettei (BioOne), the Bermuda Tilefish Caulolatilus bermudensis (STRI), the Bermuda Goby Lythrypnus mowbrayi (STRI), and the Bermuda Bream Diplodus bermudensis (Bermuda BREAM).
Bermuda has over 60 endemic cave invertebrates (CaveBiology.com) including a shrimp Procaris chacei (CaveBiology.com), an isopod Arubolana aruboides (ARKive), an amphipod Pseudoniphargus grandimanus (ARKive), an endemic genus of opossum shrimp Bermudamysis speluncola (ARKive) and an endemic family of crustacean, the Mictocarididae (CaveBiology.com). Above ground invertebrates found exclusively on Bermuda include the extinct Bermuda Flightless Grasshopper Paroxya bermudensis (OSF), the possibly extinct Bermuda Cicada Tibicen bermudiana (Bermuda Conservation), a jumping spider Habronattus nesiotus (Salticidae of the World), a freshwater limpet Ancylus bermudensis (Bermuda Conservation), a freshwater clam Pisidium volutabundum (Bermuda Conservation), and an endemic genus of land snail Poecilozonites (Bermuda Conservation).
Families of marine creatures known only from Bermuda including a jaw worm Problognathia minima (ResearchGate) and a ribbon worm Pachynemertes obesa (WoRMS). Among the marine molluscs unique to Bermuda are the spindle shells Fusinus lightbourni (Internet Archive) and Bullockus guesti (Eddie Hardy), a sea slug Hypselodoris (or Felimere) zebra (Sea Slug Forum), a murex Timbellus lightbourni (eol), Turbonilla leuca (fig. 18 at Google Books), Rissoina harryleei (Jaxshells), and a cone shell Dauciconus lightbourni (Eddie Hardy). Endemic crustaceans include a hermit crab Calcinus verrilli (Rodrigues Lab) and a copepod Antrisocopia prehensilis (CaveBiology.com).
There are about a dozen species of vascular plants restricted to Bermuda. The most seriously threatened is the Governor Laffan's Fern Diplazium laffanianum (Bermuda Conservation) which was extinct in the wild, but reintroduction attempts are now occurring (p. 3 of Audubon pdf file). Other endemic plants include the Bermuda Cedar Juniperus bermudiana (Wikipedia), the Bermuda Palm Sabal bermudana (ARKive), the Bermuda Sedge Carex bermudiana (Bermuda Conservation), the Bermuda Pepper Peperomia septentrionalis (Bermuda Conservation), the Bermuda Olivewood Cassine laneana (Bermuda Conservation), the Bermudiana Sisyrinchium bermudiana (Bermuda Conservation), the Bermuda Bean Phaseolus lignosus (Bermuda Conservation), Darrell's Fleabane Erigeron darrellianus (Bermuda Conservation), the Bermuda Shield Fern Goniopteris bermudiana (Bermuda Conservation), and the Bermuda Maidenhair Fern Adiantum bellum (nefern).
Bermuda is an overseas territory of the United Kingdom and comprises the Bermuda Subtropical Conifer Forests ecoregion (EoE). An overview of Bermuda's animals and plants can be found in the Bermuda Biodiversity Country Study (biodiversityactionplan.bm pdf file) and in the account by the JNCC (JNCC pdf file).