Orcas Use Kelp as a Possible Grooming Tool

In a new sign of toolmaking in marine mammals, orcas in the Pacific Northwest were recorded rubbing stalks of kelp against each other’s bodies, a study shows.

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What a Marine Heat Wave Reveals About Our Warming Oceans

An extreme heat wave off California’s coast seemed like an anomaly 10 years ago. But as the ocean warms, the catastrophe may be a glimpse of the future.

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