Islands represent the greatest concentration of both biodiversity and species extinctions. Island species are often evolutionarily distinctive and highly vulnerable to novel disturbances, particularly invasive species.

There are ~465,000 islands in the world

Islands comprise 5.3% of the earth’s terrestrial area


75% of reptile, bird, amphibian, and mammal extinctions combined have occurred on islands


Invasive species, which primarily spread around the globe via human transportation systems, are a leading cause of extinctions on islands and biodiversity loss globally. As the threats of extinctions are highest on islands, so are our opportunities to save species at risk. We must act now to save island species before they are lost forever.

Invasive Species are Implicated in 86% of all recorded extinctions on islands

Are a key threat to island plants and animals. Invasive mammals such as pigs, goats, cats, and rats are among the most damaging due to predation and habitat destruction.


Restoring islands by eradicating invasive mammals has repeatedly proven to be a high impact conservation action

Pinzón Giant Tortoise hatchlings survive for the first time in 150 years after rat eradication

Biologists document a 5,000% increase in native tree recruitment on Palmyra Atoll after rat eradication
Scripps’s Murrelets on Anacapa Island rebounded with a threefold increase in hatching success following the eradication of invasive rodents

More than 1,200 invasive mammal eradications have been attempted on islands worldwide, with an average success rate of 85%

Before and after the removal of invasive rabbits from Choros Island, Chile (2013-2015). Credit: Island Conservation

Invasive species, which primarily spread around the globe via human transportation systems, are a leading cause of extinctions on islands and biodiversity loss globally. As the threats of extinctions are highest on islands, so are our opportunities to save species at risk. We must act now to save island species before they are lost forever.


Island Conservation is a science based nonprofit organization dedicated to preventing extinctions by removing the primary threat to our worlds biodiversity – Invasive Species. Join us today.

Together we can save native island plants and animals.




A gift to Island Conservation in your estate plan will build a legacy and assure a future in which island species thrive. By including Island Conservation in your will, your estate may receive significant tax savings. A designated sum or a certain percentage of a residuary estate can be donated or consider making Island Conservation a full or partial beneficiary of your IRA, 401(k) or other qualified retirement plan.  If you choose to provide for Island Conservation in your estate plans, please contact the development manager at or 831-359-4787.

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Gifts of long-term appreciated stock are an easy way to provide crucial support to Island Conservation and increase your giving. Benefits may include: income tax and capital gain tax savings. Consult your financial advisor on the potential benefits.

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The Pension Protection Act of 2006 gives those at least 70½ years of age the opportunity to make tax-free charitable gifts, including the minimum required distribution.

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Donating real estate to Island Conservation may give you a tax deduction on the fair market value of the real estate and help you avoid the capital gains tax you may incur if you were to sell the property.

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Your current/former employer may double or triple your generous contribution to Island Conservation.

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Celebrate special events or the memory of a special person in your life by making an honorary gift. Please make sure to include the honoree’s name when you make your donation.

When you shop at AmazonSmile, Amazon will donate to Island Conservation. Support us every time you shop.

Follow Island Conservation on Social Media

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Midway Atoll conservation




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