SeaWorld's sea lion duo is back starting this week with a brand new show.

On April 16 Clyde and Seamore's Sea Lion High opens at SeaWorld Orlando.

Sea Lion High is the new show, taking over "Clyde and Seamore Take Pirate Island, which closed in August. That was SeaWorld's longest-running show.

The new storyline has been "several years" in the making. Clyde has become a high school math whiz, and Seamore is a jock. They both get scholarships to attend the university. But it's high school graduation day, and the duo learns — gasp! — that they've not completed all of their classes!

They have just one day to do it. Hilarity ensues.