Islets of Porto Santo, Protected islets near Porto Santo Island, Portugal.

The Islets of Porto Santo are six limestone formations surrounding Porto Santo Island within the Madeira archipelago, separated by narrow channels of seawater. They support rocky coastal habitats with low vegetation and serve as nesting grounds for specialized seabirds adapted to these isolated rocky environments.

The islets are covered by the Madeira Natural Park through the Porto Santo Marine Protected Areas Network, created in 2008. All six islets also fall within the Natura 2000 network and are covered by the municipal master plan (PDM). Entry is restricted and requires prior permission because of the fragility of their nature.

The islets belong to the Porto Santo Network of Protected Marine Areas, created in 2008, and to the Madeira Natural Park. Landing is restricted and requires prior permission because of the nesting birds and Macaronesian plants. The name cabeleira-de-coquinho refers to an endemic plant found only on the islets of Cal, Ferro and Cenouras.

These sites are only accessible from the water and are best visited during calm sea conditions. Access requires a boat or organized tour, and visitors should maintain distance to avoid disturbing nesting birds during breeding season.

The islets are home to two tarantula species found nowhere else, Hogna biscoitoi and Hogna schmitzi, alongside the Madeira wall lizard Teira dugesii jogeri. The plant cabeleira-de-coquinho (Lotus loweanus) grows only on the islets of Cal, Ferro and Cenouras.