Researchers on the SEACHANGE project hope to provide the first benchmark of what a pristine sea really looks like, against which current conservation efforts can be judged
And the deeper down the mud column the scientists go, the further back in time it takes them.
Some estimates suggest 1.3 million whales were slaughtered around the continent during the 20th Century. The population of krill, tiny shrimp-like creatures that many species of whale feed on, is likely to have exploded, with further impacts in the rest of the marine food chain.
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