By Lance Morgan, Marine Conservation Institute for Mission Blue
Originally published at National Geographic Ocean Watch
Last week an alliance of conservation organizations took a big step forward towards protecting the Central American Dome. Also referred to as the Costa Rica Dome, this highly productive region of the eastern tropical Pacific is home to abundant marine life including critically endangered leatherback sea turtles and blue whales.
The term Dome refers to an oceanographic feature that results from cold, deep ocean water rising near the surface. The water itself doesn’t dome, but a cold water band shaped like a dome comes up from the bottom. As this nutrient rich water enters depths where sunlight can penetrate it unleashes enormous plankton blooms, fueling the entire ecosystem. …