Unlike the Black Serpent Clan's den, the Fighting Dolphin Clan's home was centered around a very large network of overgrown kelp found near the edge of the Southwestern Sea's continental slope.
These overgrown kelps growing on the sea floor could extend all the way to the water surface, where the Fighting Dolphin generally slumber.
After all, Fighting Dolphins could not stay underwater for long periods like the Black Serpents. They did not have the same ability to absorb oxygen through their skin. As such, they had to surface periodically to inhale oxygen from the air.
However, despite being shallow-water mammals, the Fighting Dolphin Clan actually chose the deepest area of the shallow sea floor as its permanent habitat.
After a quick tour around the outer perimeters of the overgrown kelp region, Vaan quickly understood why.