Ultimately, the curved dorsal fin is still a mystery ... More from News Contrary to popular belief, fin collapse doesn't just affect captive whales. Biologists think there are several reasons ...

The compromised welfare of captive orcas is evidenced, among other things, by broken and worn down teeth from chewing on concrete walls and metal gates and collapsed dorsal fins. Orcas in captivity ...

Contrary to popular belief, fin collapse doesn't just affect captive ... Ultimately, what's going on is the collagen in the dorsal fin is breaking down. One reason this may happen is from temperature.