Dried filters from the mouths of filter-feeding rays started appearing in apothecary shops in recent years, but there’s been no way to know which of these gentle-natured rays was being slaughtered. Now scientists have discovered enough differences to identify the giant manta and eight devil rays using the dried filters.
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At Friday Harbor Labs, students are conducting a three-week study on the effects of ocean acidification using a strategy that’s midway between a controlled lab test and an open-ocean experiment.
The fibrous threads helping mussels stay anchored are more prone to snap when ocean temperatures climb higher than normal.