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Cocos Island National Park
Cocos Island National Park Costa Rica
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Hundreds of years ago Cocos Island was a hideout for pirates (and some say the inspiration for Robert Louis Stevenson's, Treasure Island). Stories tell of buccaneers burying treasures here… Edward Davis in 1685, Benito Bonito in 1820, and William Thompson in 1821, but if they did leave treasure (there is an authentic treasure map, but no one has ever found any) they also left a damaging legacy - pigs and goats. Seafarers left the animals to breed so that they could hunt them for fresh meat on return trips. They also inadvertently introduced rats, as humans do almost everywhere they go (they haven't found rats on the moon yet). Now, as in Hawaii, these three mammals are the scourge of the island and the biggest threat to many of the native species.

Whale Shark (photo public domain)
Whale Shark (photo public domain)

Cocos Island National Park might be thought of as the little Galapagos of Costa Rica. It is the tip of an ancient volcanic mountain isolated by the surrounding Pacific. It has been colonized over millennia and is covered with dense rainforest, but many of the species found here evolved after their arrival, changing into distinct forms that are found nowhere else in the world. These species are referred to as endemics.

The Cocos Cuckoo, Flycatcher, and Finch, are endemic bird species, and the Finch has a famous cousin- the Darwin's finches of the Galapagos Islands, several hundred kilometers to the south. Other Cocos Island's endemics include 2 lizards, freshwater fish, and nearly a hundred insects.

Hammerhead shark cruising the waters of the Pacific (photo NOAA)
Hammerhead shark cruising the waters of the Pacific (photo NOAA)

In the region
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In the region:
Coco's Island National Park is isolated in the open ocean. The nearest land is Costa Rica 360 miles (600 km) to the east. The Galápagos Islands are the nearest neighbor a few hundred miles further southwest.

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When to visit:
It rains throughout the year. Two drier seasons occur from January through March and to a lesser extent in late September and October.

Books and other resources
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Toucan Ratings Explained | Lowest Available Price
Why Buy from Us?

Diving & Snorkeling Guide to Cocos IslandDiving & Snorkeling Guide to Cocos Island
by Lucy Agace, Paperback: 66 pages, Publisher: Pisces Books, (April 1997), ASIN: 1559920920

not yet reviewed
out of print, but sometimes available from Amazon Diving & Snorkeling Guide to Cocos Island

Information on the web
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Information on the Web

Extensive information on the ecology and conservation of Cocos Island from the World Wildlife Fund, or National Geographic.

The Cocos Island research station home page.

Dive trips to Cocos and Galápagos Islands.

(5º32’N-86º59’W) 330 miles (523 km) southwest of Cabo Blanco in the eastern Pacific Ocean.

Getting There:

Cocos Island is about 30 hours from the mainland by boat. Charters and Diving tours are the only practical options for visitors.

Quick Facts

Average annual temperature 75 °F (24 °C), and more than 240 inches (6,000 mm) of rainfall per year.
11,500 acres (4,660 hectares 18 square miles, 14 times the size of Central Park NYC, and 1/20th the size of Rocky Mountain National Park, Colorado)
from sea level to 2,100 feet (634 meters)
It was this unique ecological diversity that led to the executive decree in 1978 creating Cocos Island National Park. Unfortunately it takes more than a decree to protect an ecosystem. One of the biggest problems on Cocos Island is the loss of native species to species introduced by man (pigs, goats and rats).

Tropical lowland wet forest (rainforest), stream, beach, marine

The endemic species of plants, fish, lizards and birds (the Cocos Cuckoo, Flycatcher, and Finch) generate the most interest. Offshore, the two most famous inhabitants are whale and hammerhead sharks.

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