Roughly 2 million species live in the world’s oceans. But scientists have only described a mere 10% of them. With extinctions on the rise and biodiversity threatened worldwide, many species are in danger of vanishing before researchers can identify them or fully grasp the benefits they provide. Roughly 2 million species live in the world’s oceans. But scientists have only described a mere 10% of them. With extinctions on the rise and biodiversity threatened worldwide, many species are in danger of vanishing before researchers can identify them or fully grasp the benefits they provide. Environment Phys.org – latest science and technology news stories