The Old Fishery

I've broken the Old Fishery down into four encounters: the upper floor, the shark attack, the Kraken's Folly, and the lower floor. This makes for a pretty solid day of adventuring; the PCs should be capable of clearing out the entire fishery without needing an extended rest.

The shark encounter and the Kraken's Folly are not strictly necessary to complete the task at hand and advance the story of the adventure. While it is likely that the party will come across these encounters, award them experience as though they had even if they don't - this will allow them to keep pace with the adventure's progression. That said, you should consider subtly encouraging the players to check out the areas where these optional encounters take place. Generally, this will hold true for all of the campaign's optional encounters, unless otherwise noted.