Cane Bay beach in Saint Croix in 2021. Scientists used samples from sclerosponges in this region to calculate ocean surface temperatures going back 300 years.
Mandatory Credit: Ivan Valencia/Bloomberg/Getty Images
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Centuries-old sea creatures data suggest world overshot climate limit - some scientists disagree
Using sponges collected off the coast of Puerto Rico in the eastern Caribbean, scientists have calculated 300 years of ocean temperatures and concluded the world has already overshot one crucial global warming limit and is speeding toward another.