The ocean absorbs a large amount of carbon dioxide, mitigating climate change. However, the carbon dioxide turns to carbonic acid, and appears to be altering the pH value of the oceans. This is a lethal environment for many shell forming species, and could threaten plankton, crabs, clams, etc.
Caribbean coral species are dying off, indicating dramatic shifts in the ecological balance under the sea, a new scientific study of Caribbean marine life shows. The study found that 10 percent of the Caribbean’s 62 reef-building corals were under threat, including staghorn and elkhorn corals.
Goes through a list of species under stress because of global warming. What troubles scientists especially is that if we are only in the early stages of warming, all these lost and endangered animals might be just the first of many to go. One study estimates that more than a million species worldwide could be driven to extinction by the year 2050.
Scientists have known for years that when fishing trawlers drag nets and gear across the ocean bottom they trap or kill almost all the fish, mollusks and other creatures they encounter. And the dragging destroys underwater features like reefs, turning the bottom to mud.