The Mediterranean Sea is a bountiful yet dangerous place for sea turtles. Characterized by beautiful natural and cultural heritage sites and by rich biodiversity, the Mediterranean is also a troubled and overexploited sea, where sea turtles have a hard time coping with high fishing pressure, gas and oil development, major cross-continental maritime traffic, beachfront and other habitat impacts, and widespread marine pollution.
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Global concern is growing about the current and future impacts of sea-level rise that will likely affect coastal property owners, beach-based economies, and sea turtle nesting beaches. Coastal erosion is bad for all those factions, yet effective long-term solutions to confront the rising tide of beach erosion are few and far between.
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One of the most insidious threats to sea turtles in West-Central Africa is the impact of coastal development. Two coastal towns that illustrate this phenomenon well are the megacities of Lagos, Nigeria, and Pointe-Noire, Republic of the Congo. More adult sea turtles and nests have been lost to direct take as urban expansion and coastal settlement in those cities have brought increased light, ocean pollution and vessel traffic.
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It is no secret that the Hawaiian green turtle population is recovering. The International Union for Conservation of Nature Red List classified the population as “least concern” in 2012, and the 2015 Endangered Species Act global status review concluded that Hawaii’s population of approximately 4,000 nesting females per year was increasing at a rate of 5.4 percent annually. The success of the Hawaiian green turtle, however, means that local human communities now face some new and unexpected challenges.
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The two largest aggregations of loggerhead sea turtles in the Mediterranean Sea, representing 27 percent of all loggerhead nesting in that basin, are in Greece: Laganas Bay on Zakynthos Island and Kyparissia Bay in western Peloponnese, with Laganas Bay historically considered the largest.
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Before 2000, there had been only a single published account of sea turtle nesting in Peru. The prevailing notion was that Peru is too far south—too cold—for successful sea turtle nesting. Thanks to the efforts of ecOceanica, we now know that nesting seems to be on the rise along Peru’s coast.
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During the past three decades of Projeto Tamar’s work in Bahia, Brazil, the socioeconomics of northern Bahia have changed drastically. As these new threats emerged, Tamar has worked to inform government agencies and developers that a long-standing turtle population also occupied the beach.
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