From publisher blurb:
Campaign Backdrops give you, the busy GM, all the tools you need to run a campaign set in a particular wilderness environment. Each instalment brings together—for the first time in one place—previously released material into one handy, GM friendly package. Featuring wilderness dressing, detailed random encounters, fully fleshed out villages and even a place of power all ready for immediate use in your campaign. Campaign Backdrops are the perfect accompaniment to your wilderness campaign.
Campaign Backdrops: Seas & Oceans is a compilation product. This GM’s Essential features material previously released in the following books:
Places of Power: Visionary's Perch
So What's the Pirate Ship Like?
Urban Dressing: The Docks
Urban Dressing: Pirate Town
Villainous Pirates
Wilderness Dressing: Ocean Voyage
Village Backdrop: Echo Harbour
Village Backdrop: Kennutcat
Village Backdrop: Refuge
Village Backdrop: Skaalhaft
As well as numerous 20 Things articles!