The Sand Shelf
The Bay of Light opens into a slightly deeper region of stronger currents and shifting sand bars, a sandy ledge around the deep sea crater. Migrating whales and dolphins use this ledge to skirt the dangerous waters of the Deep, knowing they have nothing to fear from the lutrai who swim these waters. The otter folk get along quite well with even the larger cetaceans, and the two species have established a rudimentary form of verbal communication. As long as the whales are present, sharks don't dare approach, and in return the lutrai will typically act as guides, helping the whales navigate through the ever-changing landscape beneath the waves.
Many lutrai also come here to fish or race, riding the powerful currents in their sleek ships or simply swimming out in small groups. The area has some hidden danger, which is why younger cubs are told not to venture out beyond the Bay of Light into these waters. On rare occasions, powerful tidal bores sweep through the shelf, re-arranging its layout in a sort of underwater sandstorm that can be just as dangerous as its surface equivalent. These bores are caused by colliding currents, the 'breath' of the Deep, so to speak. Every so often, for no explainable reason, the crater will pull in a vast quantity of water, causing a powerful cross-current to intersect with the south-eastern current. In rare instances, this pull has been severe enough to cause the edge of the crater to be exposed as a waterfall of unbelievable proportions, draining the sand shelf for a matter of moments before the rest of the ocean rushes in again.
The Dolphins
Some of the open burial mounds can be accessed by means of a stout machete, their entries left open by the Creators who first explored them. Within lie ancient stone corridors lined with cave paintings that depict images of a long-dead race. Six distinct types of wingless draconic humanoids appear in scenes of all kinds, along with images of all the old gods, each corresponding to a different breed. They were a peaceful race, from the general feel of the images, though there is a strange, slightly fanatical undertone present - some scenes depict sacrifice and inter-species fighting. As a species, they seem to mimic the higher conflicts between members of the long-dead pantheon, and in some of the deeper chambers are more disturbing scenes of their civilization's eventual self-destructive decline.
Some shamans who have studied these caves suspect that the previous inhabitants were the first, true children of the gods. Others believe that the gods may have, in fact, been the oldest and most powerful rulers of the humaoids, and that the last of the paintings were in fact made by the grieving gods, a symbol of the destructive parental conflicts that destroyed their own children. This may also explain the strange blossoms that grow throughout the ruins. In either case, the burial mounds and fallen temples are all places of powerful ancient magic that only dragons seem able to tap. Some will even visit the graves on occasion, though none are truly certain why. It is just an instinct.