We’ve long marveled at color-changing critters like squid, chameleons, cuttlefish, and others as they flash brilliant hues. Animals across species possess this ability for a suite of reasons, ...

Humboldt squid (Dosidicus gigas) are also known as jumbo squid, and it’s easy to see why — they are absolutely enormous. An adult can reach 7 feet in length and weigh 110 pounds. But what is truly ...