"Though not quite an ocean, this area is filled with salt-water bays, jam-packed with giant lakes and over flowing with waterfalls. It's also chockfull of geodes, which means it's filled with Snafflefangs."
This ocean is described to be 'not quite an ocean', instead, a cluster of rock formations and tall sea stacks, many of which form natural waterfalls, salt-water bays and lakes. The lagoon there is crystal clear, and leads to the main ocean. There is also a rich stock of geodes there.