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Sixty-three feet below the ocean's surface, the science teacher was giving his morning lesson. ''Hi, and welcome to Aquarius for our third and final broadcast from this mission,'' Mark Tohulka told his third-period marine biology students, who watched via webcam from their classroom at MAST Academy on Virginia Key.

(PhysOrg.com) -- In recent years, tropical coral reefs have become drastically altered by disease epidemics. In a new study published by PLoS ONE, lead author Steven V. Vollmer, assistant professor of biology at the Marine Science Center at Northeastern University, finds that acroporid corals listed on the US Endangered Species...

Killer whale scat, sniffed out by a specially trained Labrador retriever, is showing that endangered southern resident orcas may not be finding enough to eat.