From publisher blurb: What's growing beneath the waves? Plant-wise? Not that much. But algae can still be green and fascinating, and there is no reason not to allow the players to enjoy the incredible biodiversity of oceans. From microscopic phytoplantkon to giant kelp and glowing orbs, there is greenery to be found and adventures to be shared. Take up the challenge and upgrade your world-building game with Globetrotter's Guide to Greenery. Your setting, your campaigns, and your players will all be happy you did!