stingray

It's well reported that oil spills can have a catastrophic biological and environmental impact. But to date, few studies have examined the effect of whole crude oil on senses of a marine vertebrate. A new study is the first to confirm effects on stingrays' sense of smell.

Chewing was thought to be unique to mammals, but recently, scientists are discovering some unexpected parallels in the animal kingdom, the latest example being an Amazonian freshwater stingray that likes to nibble away on aquatic insects.