"Ye thought the orbital penitentiary around Venus was hard ta endure? That place is a vacation spot compared to Davy's Lockdown! If the guard borgs can't find an excuse ta peel the skin off yer bones and the inmates don't use ya for their bettin pool, the pressures o' bein that far beneath the waves will drive ya to the brink, mark my words!"

An underwater prison with a dark past, suitable for any sci-fi, neo-dystopian, or cyber punk setting.

Deep within the heart of the Great Woses, lies an inland sea that few care to visit.  Nevermind the ogre-infested swamps that surround it, the place is just disgusting.  While known by many names – the Belching Sea, the Eternal Loogie, Gluumraag's Blessing and sometimes, the Slimy Deep – most simply call it the Sea of Snot.

From time to time, one of the All can be divided from the One and All mind. This is a traumatic event, and it is rare that the severed member of the All survives, let alone becomes a solitary One. But from time to time, it can occur. Seeking succor from the desperate silence in its mind, the One Beneath The Waves has sunken himself beneath the oceans of Shamash II, and there it lies, seeking fruitlessly to soothe its injuries.

The Rock of Gibraltar, once a stalwart of British power, the gate to the Mediterranean, now is a fortress for the Eurasian Alliance. It's fair teeming with neo-Soviets and submarines.

In the strangest parts of The Ocean, the Lojcreltians are born. Beings of weirdness and cosmic balance so profound they can alter reality.

Not all of the mermaids and sea sirens are half fish, there are other things that live in the sea

Greentails, sirens, mermaids, merfolk, the creature you think of when you hear these names is a Tangaroa.

"Got this here from a wizard on a bargin. Just the thing to survive the salvaging of treasure from the deep when you don't have a lot of start up cash. Not everyone can tame sea turtles mate, you know what I'm saying? This here is an item with it's own character, a real unique item, so beware of imitators! The surest way to spot a fake is have a friend try it, if he dies, all you have is a ordinary bucket and a funeral to pay for, this here is the one real deal you've been looking for and it's still available for a steal!"

- Street hawker outside the Affordable Arch-Mage

It is rare that humans earn a gift from the Merpeople, as most of the time the two races tend to avoid each other, and with scarce resources the Merpeople tend not to give gifts very often, yet it does happen...

"Deepbend, the toughest place to live south of the wastes. The inmates are tough, so we gotta be tougher. They may complain of 'abuse' and 'cruel and unusual punishment' but you know, they deserve every last kick"
-Darner Gearbend, Warden.