Ocean Crawlers-

A giant Galleon spawns in somewhere in the world and the Ocean Crawlers are attacking it and jumping onto it. Go to the ship and board it to fight off waves of Ocean Crawlers until you come face to face with a boss that's a combination of all 3 Crawlers.

Ferry of The Dammed- Spirits are causing chaos on board the Ferry Of The Dammed. When this activity starts all of your Lanterns will turn into a soulfire green color for a second. When this is active the everyone is connected to the same Ferry.

Defeat waves of enemies that drop loot and send interact with the door with the loot to send it back onto your ship.

Icebergs- We need an ice area. We got Volcanos. Where's ice and shit. Anyway.

Ice Bergs that have hollowed out entrances and have skeletons inside. This is similar to sea fortresses where you can do it whenever.

The skeletons in these icebergs are Ice Skeletons which need to be burned to take damage or shot point blank to shatter the ice.