I can't think of any hard info about the Sweet Sea, but I can make up plenty :
- there's a legend about an island in its middle, this island has a well and at its bottom is a Truestone. It's guarded by ferocious ten-meters sea serpents (lifted from Griffin Mountain)
- there's a Very Big Fish (giant gar, bigger than a blue whale), with Lots of Teeth, called the Sweet Sea King. It can jump out of the water and fall back on a ship's bridge, shattering it. It might be intelligent ; it might be possessed ; local merchants and fishermen would love to get rid of this menace. On the carmanian coast, innovative solutions are welcome.
- there are Sacred Spots where fishing is particularly abundant ; sometimes you trawl Interesting Things out of the nets as well (One-Eyed Jurgan once fished a Blue Star Shard out of the Good Spot). Several families / clans of fishermen compete and sometimes battle to get there first on auspicious days.
- an isolated fisherman clan knows the secret of finding / making Pearls. Everybody else is out to get this secret. So how come the lowly clan is still the only one to have it ?
Hervé