Voyaging Trader

Voyaging Trader: An alternate version of the wandering trader that spawns in a boat whenever a trader's spawn point is within a large enough body of water. Spawns one trader llama as a passenger and has a chance to spawn a parrot on the trader's shoulder.

This would be more immersive for anyone building an underwater city or an island civilization, & add some logic to the trader's approach in places that are inaccessible by land.