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Ecosystem-based Adaptation (EbA) integrates the use of biodiversity and ecosystem services into an overall strategy to help people adapt to the adverse impacts of climate change. It includes the sustainable management, conservation and restoration of ecosystems to provide services that help people adapt to both current climate variability, and climate change1. Ecosystem-based Adaptation contributes to reducing vulnerability and increasing resilience to both climate and non-climate risks and provides multiple benefi ts to society and the environment.

The coastal ocean environment provides enormous value in fishery and other products, as well as ecosystem services like coastal protection, water purification, and locations for ports, harbors, urban centers, tourist destinations, and numerous recreational pursuits. Coastal environments can also cleanse the soul, stimulate the mind, and restore the body. But 40% of all people live within 50 km of a coast, and our enthusiasm for coastal living is creating ever more environmental damage.

The Great Barrier Reef (GBR) provides a globally significant demonstration of the effectiveness of large-scale networks of marine reserves in contributing to integrated, adaptive management. Comprehensive review of available evidence shows major, rapid benefits of no-take areas for targeted fish and sharks, in both reef and non reef habitats, with potential benefits for fisheries as well as biodiversity conservation. Large, mobile species like sharks benefit less than smaller, site-attached fish. Critically, reserves also appear to benefit overall ecosystem health and resilience: outbreaks of coral-eating, crown-of-thorns starfish appear less frequent on no-take reefs, which consequently have higher abundance of coral, the very foundation of reef ecosystems. Effective marine reserves require regular review of compliance:fish abundances in no-entry zones suggest that even no-take zones may be significantly depleted due to poaching.

As environmental problems continue to increase at an ever more rapid rate, exacerbated by the major threat of global climate change, the need for widespread remedial action is becoming ever more pressing. Scientific consensus on both the root causes of these problems and the measures required to tackle them is growing, while mass media and public interest has reached fever pitch. Of course, while this has put pressure on decisionmakers to take positive action, the realisation of the gravity and extent of the environmental problems has encouraged all those concerned about the state of our world to search for partners around it: one such significant partnership to e­merge in recent years is between those concerned with the conservation of nature –and of its biodiversity– and the custodians of sacred sites, representing both indigenous beliefs and mainstream faiths.

Mauka (toward the mountains) and makai (toward the ocean) are not just directional references; they embody our fundamental natural and cultural resources, land and ocean. Hawaiians believe there is a balance between ocean and land. In traditional times, the ocean and its marine life were as well known as the life attributes of the upland areas. This intimate relationship with nature resonates today in the modern principle of sustainability. We continue a strong interconnected, interrelated and interdependent relationship with our natural and cultural resources. Some call it ecosystem-based stewardship.

Life in the sea is diverse, exciting, good to eat and provides a myriad of services to humanity, many of which we barely even comprehend. However, human activities now pose serious threats to the oceans’ biodiversity and their capacity to support productive fisheries, recreation, water purification and other services we take for granted. These threats come at a time when we still know little about the life that exists in the sea. Even species we have been catching and eating for hundreds of years such as cod, tuna or halibut, have unknown secrets. We think we know enough to catch plenty today and still have enough left over for tomorrow. Then a fishery collapses, proving that in the sea, just as on land, humans can decimate animals which once had hugely abundant populations. If we do this to species we are supposed to be managing for our own benefit, what are the prospects for small, or deep-sea living creatures that have yet to be discovered? How safe is anything from the pollution, over fishing and habitat destruction we inflict on the sea? We desperately need new approaches to better manage the oceans. A growing number of people now believe there is a way to conserve marine biodiversity, restore dwindling fish stocks, promote sustainable tourism and safeguard ecosystem integrity.

Coral reefs are one of the most spectacular and valuable ecosystems on the planet — and one of the most threatened. Climate change, coastal development and tourism, destructive fishing, and other human activities are endangering their very existence. At the current rate of destruction, more than one-third of the world’s coral reefs will be destroyed within our lifetime. This will mean devastating losses in biological diversity, shoreline protection, income, food, and scientific discoveries. However bad the outlook may seem, there is still hope for coral reefs. With increased education comes an increased appreciation and understanding of the immense value of coral reefs. This has led to exciting initiatives and conservation projects in countries throughout the world. Coral reef protected areas are being established worldwide and are considered one of the best tools for reef protection.

Protected areas of one sort or another cover about 10 per cent of the world's land surface; the large majority were established in the second part of the twentieth century. Although most were originally set up to protect landscape values, wildlife or more recently biodiversity, they are increasingly expected in addition to provide wider benefits to human society.

The purpose of this report is to provide an assessment of the current condition of coral reef ecosystems in U.S. jurisdictions, including the U.S. Virgin Islands, Puerto Rico, Navassa, Florida, Flower Garden Banks and other banks of the Gulf of Mexico, Hawaii, the Northwestern Hawaiian Islands, American Samoa, the Pacific Remote Island Areas, Guam, and the Commonwealth of the Northern Mariana Islands (CNMI). The report also provides an examination of coral reefs in the Pacific Freely Associated States (FAS), including the Republic of the Marshall Islands, Federated States of Micronesia, and Republic of Palau. The report focuses primarily on shallow-water portions of these states and territories, from the shoreline to the maximum depth at which sunlight-dependent corals can survive. Coral communities occuring in deep and cold waters are the subject of a complementary report currently under development.

Coral reefs are vital ecosystems, providing a source of income, food arid coastal protection for millions of people; arid recent studies have shown that coral reef goods and services provide an annual net benefit of US$30 billion to economies worldwide (Cesar et al, 2003). Coral reefs are composed mainly of reef-building corals: colonial animals (polyps) that live symbiotically with the single-celled microalgae (zooxanthellae) in their body tissue and secrete a calcium carbonate skeleton. Coral reefs are formed by hundreds of thousands of these polyps and are found in warm, shallow, clear, low-nutrient tropical and sub-tropical waters, with optimum temperatures of 25-29eC, although they exist in ranges from 18eC (Florida) to 33eC (Persian Gulf) (Buddemeier and Wilkinson, 1994). They are incredibly diverse, covering only 0.2% of the ocean's floor but containing 25% of its species and they are often dubbed the 'tropical rainforests of the oceans' (Roberts, 2003).