D&D 5E Noncombat Encounter - Underwater

Agmand Kos is a greedy male sea elf mage with a magical monocle. He likes talking about great works of creativity and is related to a stylish conjurer
At a channel through a coral reef. There is a patch of golden sea plants with a patch of yellow seaweed (near a wide gorge)
They are adapted to darkness
Possibly... they have a Tome of Clear Thought

Agis is a resilient crabfolk bandit captain holding a pair of goggles. They have to flip a coin to make most choices and have done business with an insecure spymaster
At a patch of dead soft coral and a garden of dense coral (there is a patch of sea anemones)
They are in need of help

They have a rider who is unconscious
At a desolate shrine to a power of nature near a garden of pretty soft coral (close to a sandy surface on coral)
They are adapted to darkness

a Tribal Warrior is waiting for the mount's rider
At a floating pocket of air and a pile of lavender seaweed (a maelstrom is forming)
They are telepathic

Varis is a charming merfolk assassin with an aluring diadem. They are driven by a hunger for money and are currently gathering pretty stones
At a patch of seaweed by a statue (by a channel through a coral reef)
They are gathering small sea creatures

They are eating from a pile of food and waiting for their rider
At a bed of decaying seaweed and an algae-covered stone mosaic (nearby is an underwater tunnel entrance)
They are bearing symbols of a deity of darkness
Possibly... they have a Helm of Telepathy

Keros the Raider is an impulsive gnome mage with an elderly sea spider. He is a renowned actor and is currently playing with conch shell
At a damaged kelp bed (which is associated with flying fishs)
They are a shapechanger
Possibly... they have a Helm of Brilliance

Lawren Wisehedge is a fierce triton bandit with torn attire. They have many tales of foreign lands and have a child with a nearby merchant.
At an abandoned obelisk. There is a small monument with a pile of seaweed (close by is an area of open water)
They are watching a cave mouth
Possibly... they have an Eversmoking Bottle

Xanavara the Raider is a tattooed merfolk scout wearing a magical gold mask. She is shunned by family and is currently practising for an event
At a floating pocket of air (near a few underwater cave entrances)
They are watching a magical portal
Possibly... they have a Potion of Speed

They are a familiar waiting to give a message
At a damaged seaweed garden (nearby is the fresh corpse of a sea dragon)
They are strong swimmers (extra speed)
Possibly... they have a Helm of Telepathy