Researchers have filmed two male cuttlefish fighting over a female mate. The video, taken in the Aegean Sea, shows the males raising their arms, changing their skin colors and dilating their pupils in ...

A small team of marine biologists at the University of Bristol, in the U.K., working with a colleague from the Regional ...

The golden tortoise beetle, native to North America, is known for its striking color changes. This beetle can shift from a shiny gold to a dull red or brown, depending on its mood or environmental ...