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In dives with the submersible ALVIN and the underwater robot QUEST off the coast of Costa Rica in the summer of 2005, researchers observed lithodid crabs grazing at bacterial mats at a methane seep in the vicinity of the mud volcano "Mound 12". As far as they know, deep-sea crabs feeding on bacterial mats were discovered only one single time before. Their team was the first one to also generate a photographic documentation over a longer period which allows scientific interpretations. [Source: EurekaAlert!]
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