Fish schools and krill swarms take on common shape

When fish or tiny, shrimp-like krill get together, it appears they follow the same set of 'rules.' According to a new study published online on September 16th in Current Biology, a Cell Press publication, shoals of fish and swarms of krill hang out in groups that take on the same overall shape; it's not a simple sphere, a cylinder, or ovoid, but something more akin to an irregular crystal, the researchers say...

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