Survival strategy found in living corals which was only seen in fossil records

Some corals can recover after massive mortality episodes caused by the water temperature rise. This survival mechanism in the marine environment — known as rejuvenation — had only been described in some fossil corals so far. A new study reveals the first scientific evidence of the rejuvenation phenomenon in vivo in Cladocora caespitosa coral colonies, in the marine reserve in Columbrets, in the coast of Castellón.

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Many cooks don't spoil the broth: Manifold symbionts prepare the host for any eventuality

Deep-sea mussels, which rely on symbiotic bacteria for food, harbor a surprisingly high diversity of these bacterial 'cooks': Up to 16 different bacterial strains live in the mussel's gills, each with its own abilities and strengths. Thanks to this diversity, the mussel is prepared for all eventualities, researchers report.

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Anesthetizing fish may affect research outcomes

Fish use colorful patterns to signal to each other, including advertising for mates and warding off rivals. Studying the relationship between color and behavior sometimes entails anesthetizing and photographing the fish, but anesthetics may alter coloration, influencing the traits researchers are trying to study.

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