Sea Turtle Nesting in South America: Where and When to Witness It

The Nesting Species

Six of the world's seven sea turtle species nest on South American beaches. The leatherback (Dermochelys coriacea) — the world's largest turtle, reaching 900kg and 2.1m — nests primarily on the Atlantic-facing beaches of Suriname, Guyana, French Guiana, and Trinidad. The green turtle (Chelonia mydas) nests on beaches throughout Brazil's northeastern coast, Fernando de Noronha, Trindade Island, and the Galápagos. The loggerhead (Caretta caretta) nests in smaller numbers on Brazilian beaches. The hawksbill (Eretmochelys imbricata) nests on Caribbean coast beaches from Trinidad to Colombia. The olive ridley (Lepidochelys olivacea) nests in mass synchronised events (arribadas) on specific beaches in Colombia and Ecuador. Witnessing any of these nesting events is among the most primordially moving wildlife experiences available — these animals have been nesting on these beaches for 100 million years.

Leatherback Turtle Nesting Suriname

Suriname's Shell Beach and the Galibi Nature Reserve on the Marowijne coast are the world's most important leatherback turtle nesting sites — up to 30,000 leatherback nests are recorded in peak years, representing a significant proportion of the global population. The nesting season runs from March to August (peak: April–June) and the hatching season from May to September. Access is through guided tours from Paramaribo (Suriname's capital) — a 5-hour boat journey to the nesting beaches through mangrove channels. The tours, run in partnership with the Carib and Arawak communities who monitor the nests, are outstanding conservation tourism examples. Witnessing a female leatherback the size of a coffee table emerge from the ocean at midnight, dig a nest with her rear flippers, deposit 80–100 golf ball-sized eggs, and return to the sea is genuinely extraordinary.

Sea Turtle Watching Brazil: Fernando de Noronha

Fernando de Noronha, Brazil's UNESCO-protected Atlantic archipelago, has a significant green and hawksbill turtle population. The TAMAR Project (Brazil's national sea turtle conservation programme, established 1980) monitors nesting beaches throughout the island. Baia do Sueste is the primary turtle viewing beach — snorkelling here with green turtles in crystal-clear Atlantic water is one of the most accessible sea turtle experiences in South America. The snorkelling is supervised by TAMAR staff and entirely non-invasive. The island itself is one of Brazil's most spectacular destinations — limited visitor numbers ($60/day environmental tax) keep the beaches uncrowded and the marine life extraordinary. Many visitors combine their turtle watching experience with exploring other Brazilian destinations like Rio de Janeiro on their South American adventure.

Galápagos Sea Turtles

Green sea turtles (Chelonia mydas agassizii — the Pacific green turtle) nest on beaches throughout the Galápagos Islands from January to June, with the peak nesting season in December–April. Playa Las Bachas on Santa Cruz Island and several beaches on Isabela are the primary nesting sites. Snorkelling encounters with Galápagos green turtles are among the most reliable and accessible wildlife encounters in the islands — turtles are present year-round in the waters around Santa Cruz and San Cristóbal and are commonly encountered even on casual snorkelling from the beach.

Turtle Nesting Season South America: Conservation Context

All sea turtle species are classified as either Endangered or Critically Endangered on the IUCN Red List. The primary threats are fishing net entanglement (bycatch), beach development and light pollution that disorients hatchlings, egg collection (still occurring illegally on some beaches), and climate change (which affects nest temperatures and thus sex ratios in developing eggs — warmer temperatures produce more females). Every quality sea turtle watching programme in South America works in partnership with conservation organisations. Choose operators who contribute to monitoring data, enforce no-contact nesting protocols, and support the local communities who are the most important long-term guardians of nesting beaches.