Each year, nearly a million snorkel-masked tourists flock to Stingray City, a sandbar in the Cayman Islands, for a chance to touch, feed and even kiss wild stingrays. But all this interaction with humans seems to have softened the rays' rugged lifestyle, a new study suggests.

"We saw some very clear and very prominent behavioral changes, and were surprised by how these large animals had essentially become homebodies in a tiny area," study researcher Mahmood Shivji, of Nova Southeastern University's Oceanographic Center in Florida, said in a statement.

To read the original article: Tourists Turn Wild Stingrays Into Homebodies | LiveScience