D&D Notable Location - Underwater

A location that is known locally or further afield, as a landmark, place of history, magical danger or otherwise noteworthy.
Encounters underwater bring visions of murky seas, vast reefs and dark depths. They might occur in a kelp bed, an underwater cave or by a long-forgotten shipwreck

terrain:

A sunken ruins. It has a store of powerful fiendish magic. It is sacred to a power of secrets.
A sinister temple to a power of peace. is said in legends that The Illuminated Sanctuary is nearby..
A dusty crevasse. It is used as a temple by a power of the seas.
The Lodge of Westthorpe is a beautiful inn. It is associated with life magic. It is associated with a power of nature. is the birthplace of an ancient princess.
Garden of Angel is a seaweed garden.
A sentient group of statues. It is known to a character, who has had visions of their death here.
Isle of Dolphinford is a warded gorge. It is at a crossroads. It is known to a character, who feels like they know the place.
Inn of the Sea Dragon. In a trench with magical wards, this structure is carved from coral. Travelers are found from many realms.
An eerie line of statues. It is used as a temple by a power of trickery.
Funzaenden Caves is a glistening reef. It has an aura of powerful nature magic. It is touched by divine magic. was the site of a great battle - giants fought a group of peoples and retreated and there is a grand memorial remembering it.