Biodiversity in the Delta Range: Teulada’s Inadvertent Sanctuary

Porto Zafferano and the coastal area defined as the “Delta Range” represent an exceptional case study for biologists and naturalists. The forced isolation imposed by military activities has created a biological refuge where species—threatened elsewhere by urbanization and mass tourism—have found an ideal habitat to reproduce and thrive.

While much of the Mediterranean coast struggles against coastal “over-development,” the cliffs and beaches of Capo Teulada maintain an extremely high biodiversity index, turning every boat tour into a true nature expedition.

Monitored Species & Habitats

An inventory of the primary biological entities inhabiting the protected area of the Delta Range.

Iconic Species

Loggerhead sea turtle (Caretta caretta) - documented nesting.

Avifauna

Audouin's Gull, Peregrine Falcon, Mediterranean Shag.

Terrestrial Fauna

Sardinian deer, Wild boar, Hermann's tortoise (inland areas).

Critical Period

June - September (nesting and egg hatching).

Protection Factor

Total absence of light pollution and nocturnal foot traffic.

The Caretta caretta: Queen of Porto Zafferano

One of the clearest signs of the environmental health of this area is the choice of Cala Zafferano as a nesting site by the Loggerhead sea turtle (Caretta caretta).

These reptiles are extremely sensitive: to lay their eggs, they seek out silent beaches, free from artificial lights, and with a specific sand grain size. The fact that the Range remains deserted for most of the year guarantees the turtles maximum tranquility during their nocturnal ascent onto the beach.

Birdwatching from the Sea: Audouin’s Gull and Raptors

The cliffs framing Porto Zafferano are the realm of seabirds. This is a nesting site for the rare Audouin’s Gull (Larus audouinii), a species that lives almost exclusively in wild and pristine environments.

From the boat, you can also observe:

• The Peregrine Falcon: Which utilizes the updrafts of Capo Teulada for hunting.
• The Mediterranean Shag: Often visible on outcropping rocks while drying its wings in the sun.

These sightings are made possible only by the respectful distance that we at VerdeBlue Rent maintain from the surveyed nesting sites.

Why is the Range a Hotspot?

The biodiversity of the Delta Range is not accidental. It is the result of three “negative” factors producing a “positive” impact:

1. Absence of Commercial Fishing: The maritime interdiction area acts as a “lung” for fish repopulation.
2. Zero Plastic Pollution: With no bars or beach clubs, the amount of solid waste is virtually non-existent.
3. Undisturbed Microclimate: Mediterranean vegetation (maquis and garrigue) grows without pruning or arson linked to property speculation.

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Sailing with a Conscience: VerdeBlue Rent’s Commitment

For us, bringing guests to Porto Zafferano means being the ambassadors of this fragile ecosystem. During our excursions:

• We provide professional binoculars for long-distance observation without stressing the animals.
• We turn off engines in proximity to sighting areas to reduce acoustic impact.
• We educate our guests on the value of “wild nature” compared to “tourist nature.”

Come and discover the wild soul of Sardinia.

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Last environmental update: May 2026. Biodiversity is a gift of the earth that we have the privilege to observe. Treat it with reverence.