Update: the Census of Marine Life

Some two thousand scientists worldwide are collaborating on the Census of Marine Life. They have discovered some 5,000 species and know they are nowhere near done. While most press has gone to the new fish, octopuses, etc., progress is being made at the "lower" levels, too. The thousands or millions of species of tiny animals lurking in the seafloor take great effort to find and classify, but they are important components of the ecosystem, so the Census wants them all.