A newly tagged 9-foot great white shark popped up close to a South Florida beach over the weekend. The satellite tag attached ...

You may be aware that Chinook salmon return from the ocean to their spawning grounds in Idaho, but what you might not know is ...

So, the cause cannot be captivity alone. Ultimately, what's going on is the collagen in the dorsal fin is breaking down. One reason this may happen is from temperature. Warmer temperatures can ...

Fins: Help a fish move. The top fins are called dorsal fins. If there are two dorsal fins, the one nearest the head is called the first dorsal fin and the one behind it is the second dorsal fin.