Typhoon Lagoon is mentioned in Shell Game,the fifth book, when Finn is sent there by Wayne. If you didn't know, this is where we see Ursula and King Triton, and where Amanda helps save Finn from a giant wave.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.