Sea lions celebrate 21st birthday with hundreds of fans

PANAMA CITY, Florida – Turning 21 is special for most people, but even more so for a pair of sea lions at a marine park in Florida.

Hundreds of people lined up Tuesday to sign birthday cards for Windy and Otto in Panama City's Gulf World.

The birthday was extra special since most sea lions in the wild survive only into their teens.

Windy and Otto showed their appreciation by putting on their famous routines.

The big crowd on hand sang "Happy Birthday" to the pair, and visitors were also able to pose for pictures with the popular duo.