D&D 5E Noncombat Encounter - Underwater

Ola the Porthole is a selfish gnome noble with a glistening tattoo of an a ghostly dragon turtle. She is always looking for the easy option and has information about a quest of the group
At an area of open water and a garden of bright sea grass (nearby is a kelp garden)
They are adapted to darkness

Ivory Aegea Shoreline is a brave female goblin priest covered in long scars. She adores to appear mysterious by saying phrases in Terran and is looking for a house
At a bed of ornamental sea anemones (there are a few clumps of sea grass)
They are investigating something from the surface

Ratbelt is a retired githzerai zerth covered in white tattoos. They like exploring and seek to warn of the coming apocalypse
At a skeleton of a large sea monster (nearby is a pile of bright seaweed)
They are exploring ruins

Equara the Exile is a bald bullywug with knee-high leather boots. They believe the past should be left behind and are currently staring at nothing
At a part-buried small monument (close to an undersea mountain)
They are curious about a nearby light source

They are the loyal mount of another creature and have been ordered to stay here until their rider returns.
At a permanent maelstrom (by a coral-carved hall)
They are digging up someone

Dhumus is a skilful human scout covered in cheap jewelry. She believes in the value of friendship and is disputing an inheritance with family
At a patch of golden algae and a shallow hole (many coloured lights are in the area)
They are making underwater art
Possibly... they have an intricate set of dragonchess with ivory pieces using creatures of the sea

Xabat is an ugly lizardfolk knight with a dirty rare fish companion. She is a retired adventurer and has news about a cousin of a character
At an enchanted stone mosaic near a cage on a chain (there is a diving bell)
They are a shapechanger

Fodel the Aquitect is an outspoken female dragonborn spy with distinctive shell jewellery. She is a proud artisan and has a friend in common with a character
At a patch of seaweed (close by is a sunken statue)
They are are making a new home or lair
Possibly... they have a Spell Scroll of dream

They are the loyal mount of another creature and have been ordered to stay here until their rider returns.
At a sunken ruins (nearby is an area of magical darkness)
They are adapted to darkness

"Salt" Hollowhide is an expert male dwarf guard covered in red tattoos. He believes others are to blame for any problems and is currently swimming
At an area of bright algae and an overgrown sea cave entrance (by a channel through a coral reef)
They are are looking for somewhere to die
Possibly... they have 100 ft. of silk rope