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Ocean Organizations Designate Seamounts off California Coast as Newest Hope Spots in Worldwide System

CALIFORNIA COAST, UNITED STATES (May 14, 2019) – Deep below the ocean’s surface, not far from the beautiful beaches of the California coast, where millions sunbathe, surf, and enjoy the majesty and tranquility of the sea, lies a world of underwater mountains, volcanoes and ancient islands called seamounts. These seamounts provide a home to biologically important treasures critical to the health of the ocean. Although virtually unknown to the Golden State’s nearly 40 million residents, the seamounts are home to creatures like the endangered blue and gray whales and sperm whales, sharks, rare deep‐sea corals that take hundreds of years to grow, and seabirds hunting high overhead for fish that aggregate near the seamounts. Unfortunately, the dozens of vibrant seamounts along California’s coast and across the globe face a risky future due to potential deepsea trawling, ocean warming and acidification, offshore drilling, and the rise of deep-sea mining, a practice that extracts minerals from the seamounts and seabed.…

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Gorda and Mendocino Ridges – California’s Test Cases for Deep-Sea Mining

By: Samuel Georgian, Marine Biogeographer at Marine Conservation Institute.

 
The Gorda and Mendocino Ridges are a complex series of oceanic ridges just off the coast of northern California and are home to unique deep-sea ecosystems including hydrothermal vents and cold seeps. Unfortunately, these areas may be at risk from future deep-sea mining efforts. It is critical that we enact protection for these diverse habitats before they are irrevocably damaged by commercial activities.
Hydrothermal Vents
Only discovered in 1977, hydrothermal vents are incredible deep-sea ecosystems that form due to the venting of extremely hot and mineral-rich fluids into the water column. Hydrothermal vents occur when fractures in the seafloor allow seawater and magma to meet, resulting in the venting of extremely hot (750°F and higher) fluids into the water column.…

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