Ghost Pirates of the Sea-erra Madre

You attempt to convince Jenny Mudge and Louisa that you'll be a useful addition to their team, and while they don't seem to fully believe you they figure that at the very least having an extra body along for undersea exploration is probably a good idea.

While they won't tell you exactly how they deduced the location of Atlantis (the most they'll give you is that it's a result of their detective skills and knowledge from the past and future) they instruct you to follow their ship and prepare to dive.

The three of you descend together and you're amazed when almost directly below you is a sunken ship! It's not Atlantis, but it is something and you're excited to explore it at the very least.

However, before the three of you can begin to explore the ship you see a harpoon sailing through the water towards you. You're under attack!

Swarming out from around the sunken ship you see merfolk! Mythical creatures that are half fish and half human! It looks like maybe you've found Atlantis after all!

Jenny Mudge and Louisa are attempting to fight back using the weapons you have, but you realize that you have something that could turn the tide of this battle: Your laser light!

You activate your laser light and attempt to blind the merfolk. It works! The merfolk turn and flee into the murky depths!

Louisa and Jenny Mudge seem to be glad they invited you along, but you're not sure how long that will last. Louisa suggests that you explore the sunken ship while Jenny Mudge wants to try to find Atlantis. It looks like you're the deciding vote!