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Sea dragons tribe inhabit the south seas mostly, where it's warm and rich with food, but can be spotted all across the ocean and even nearby the fresh water. Perhaps, this is the most numerous tribe overall, with many sub-species existing. Sea dragons come in grey, white, black, blue and green colors, which help them camouflage among the seaweed and in the water deeps, but usually grey with light underbelly. Some of them have got a set of fins ribbons along the body, they've also got webbed feet and a big fin on the tail. The fin ribbons are mostly a decoration, they can even shed them, if they're forced to live for too long above the water, and grow back again. They've got sleek rubbery skin, some times with bio-luminescent dots across it, the fins can be luminescent as well.
All of the sea dragons have got a set of working gills, and normal dragon lungs at the same time, so they can breathe under the water and on land too, but it's better to alternate land and sea, if they're forced to stay outside the water for too long, they may get pains in the gills, or even inflammation and serious health issues, and if they don't breathe air once in a while, the lungs get filled with mucous liquid and it takes effort to clean and make them work again, rather uncomfortable process, also they feel a bit lack of air under the water and are always happy to take a big lungful of fresh oceanic breeze.
Sea dragons are usually careless and frisky, and quite horny. They befriend cetaceans, especially the intelligent species, and can learn to communicate with them, they may travel and live with packs of dolphins and orcas. As written in the travel book of the Ice Tribe, when the writer was rescued by Sea Dragons - "They left me on the beach, under a palm tree shade, with a heap of raw fish, thinking it would be a perfect meal for any dragon. Needless to say it was barely edible for an Ice-tail like me, still, my injuries were great and I had to recover, I began to eat the stinky bony meat, while watching my rescuers play in the shallow water like hatchlings. The three females were throwing shells and seaweed into each other and laughing silly. Then they've started making weird and loud creaky noises, shouting at the ocean, and after a while a pack of dolphins have come, by the looks of tribal markings on them I could clearly see those were the intelligent ones. The dragonesses have started talking to them, to my biggest surprise, they could understand each other, and the dolphins joined their game. I've focused on picking the least stinky fish among my heap and when the next time I looked at the sea, I nearly choked on my meal - the dragonesses and dolphins were clearly mating with each other, with passion and vigor. They knew I was probably watching but did not care at all. To them it was like another game, and they enjoyed it, way too much. A few more dolphins came and joined them, a mess of squirming bodies, moaning, laughing and chatting with this creaky language I could not understand. I swear this kept going until the dark. We, the Ice Tribe, keep modesty and chastity in our culture, this was shocking to see, and yet I could not look away, there was something primal and so full of raw life force, I was mesmerized. I swear, when they've done and casually swam away, it was still smelling of dolphin cum and dragoness pheromones until the morning. One of the sea nesses watched over me for the next few days while I was recuperating and you could guess what has happened to me - I would never be able to watch into the eyes of another Ice Dragon for the things we've done with her on the soft sands there. Or so I thought, being as young and naive as I was."
Most of the sea dragons live in the oceans nomadic way, with no regular settlements and migrate thousands kilometers in any random direction they feel like. But there are some underwater cities exist, and even a few overland villages, where they work on crafting things with fire and trade with other tribes. There are uneasy regions in their watery domain, the Rift has crossed the sea bed too, creating the Black Chasm there. The black chasm is a source of evil, nasty things dwell in the bottomless deeps and rise up from it some times, the number of sea sentinels watch over the black chasm, with the help of dolphins and orcas, and warn each other of any new threats. With each year the black chasm keeps spreading further and growing wider, which really concerns the elders and those few serious dragons among the sea tribe who would take responsibility.