Mission Atlantis

Mission Atlantis is the 40th island on Poptropica and the second episodic island.

From Poptropica Tours
It's a different world under the sea... but the ancient secret at the bottom of ocean is beyond your wildest dreams.

Episode 1: Into the Deep
It was supposed to be simple: photograph rare sea creatures, then head back to the surface. But a stunning discovery leads you to a brand new mission!

Episode 2: Fortress of the Deep
You've discovered something amazing at the bottom of the ocean! Now, you need to find a way inside.

Episode 3: Out of the Blue
You're on the verge of the greatest discovery in human history-but an ancient intelligence has other plans.

Trivia

 * The jellyfish was called hydromedusa, however, hydromedusa is actually a genus of turtle. The correct term would be hydromedusan jellyfish.