(OOC:  It's fine for Arael to change her turn.  Throwing a spear would probably have been a full action, not a bonus action.  Yes, two-weapon fighting requires light weapons, so a spear wouldn't work.)

Keyo, you're doing a decent amount of damage to the shark creature, and it's beginning to look badly wounded.  However, you see out of the corner of your eye, the sahuagin surround you and are readying to attack once again.

Sharkbody Abomination CON save:  6 

Arael, the creature you are fighting looks much healthier, though you are slowly chipping away at it.

To the north, you see the sahuagin leader reappear as she casts a spell, her finger trembling as she points towards the group, and one in particular.  Arael, make a WIS saving throw.

WIS saving throw: 19

Arael, you hear strange sounds, screams, people ripping at rotten flesh and crunching on bones - it's terrifying and then... it passes.  Whatever the sahuagin leader tried to do, it failed to take hold.

Dajarkal casts a spell, and Arael, you feel a jolt of healing running through you; you are healed for 4 hit points.  She turns to face the sahuagin next to her, and shouts:  Get this thing off me!  She will disengage and back away.

Silent is up.

Silent will swear angrily seeing Keyo flanked before lunging again with the spear at Ab1. 

Attack 21 Damage: 9   

The abomination is still standing, but only just.

Sahuagin 1 attacks Keyo:

Bite Attack: 18 Damage: 3
Claw Attack: 19 Damage: 3

It's hard to make out what happens.  Both attacks look like they just hit, but somewhere there are vibrations in the water around Keyo, and when you look again, the teeth and claws have passed by or through him, leaving him unharmed.

Sahuagin 2 makes the same attacks on Keyo:

Bite Attack: 16 Damage: 3
Claw Attack: 18 Damage: 5

It's almost like a strange dance, but the elf stands unscathed in the middle.

As Dajarkal flees, Sahuagin 3 closes now upon Pockets to make his attack:

Bite Attack: 6 Damage: 3
Claw Attack: 15 Damage: Unable to parse dice roll.

The mouth snaps shut on water, but the claw rakes against your right side.

The first sharkbody creature moans... you hear a strange whispered voice coming from it... and a single word... Consume.

Its mouth snaps towards Silent:

Attack: 13 Damage: 14

The jaw snags the half-orc's right shoulder, twisting him.  Silent, you thrash around and are able to pull yourself free, but the water is thick with your blood.

The second sharkbody creature, still struggling under the effects of Arael's spell, attacks her but with disadvantage:

Attack: 11 Damage: 11

For a moment, its movement seem slowed, and then it strikes.  Arael, your unconscious body is held in its mouth for a moment, and then it drops you as it turns towards Silent.

Round Five
Pockets and Keyo first.  Then if Arael is still unconscious, a death saving throw from her.  
Selachai
Silent and Dajarkal
Sahuagin 1-5
Sharkbody Abominations

Pockets and Keyo are up.   (Showing a close up for readability - see previous map for the location of the villager and the other sahuagin.)

(OOC: If Pockets moves to the opposite side of Sahuagin 3 without leaving his reach, is he close enough to take a shot at the Leader?)

(It would be within 80 feet, so Pockets would get a regular crossbow attack without disadvantage.  The leader is hiding though - you can see her, but she has half cover behind a ruined wall.)

Pockets moves around the Sahuagin closest to him, careful not to give it an opening, reloads and fires his crossbow at the Leader.

Attack: 20 Damage: 10

The bolt seems to get caught in a current of water, and passes about ten feet from where the leader is watching, her eyes burning as they fix on you.

Keyo is up.  Arael, make a death saving throw please; if Keyo revives you, we can disregard it and you can take your full turn.

(OOC: Can I exchange my two sorcery points for a level 1 spell slot and cast shield and raise my AC to 20?)

You would need to have done that as a bonus action on your turn.  It can't be done as part of a reaction on someone else's turn.  I'm afraid Arael needs to make a death saving throw.

Death Save: 3

Okay, so that's one fail.  Keyo is up.

"Arael!" Keyo calls out as he nimbly tries to avoid the numerous attacks aimed at him. Keyo will then slash at the Shark Abomination once more.

Attack: 20 Damage: 8

The combat is gruelling, the water thick with red blood.  Keyo's dagger finds its mark, and it cuts deeper, slicing something important within.  It snags, and as you pull the weapon clear, a huge tear opens up in the creature's abdomen and blood, and other fluid, start to pour out.  It shudders, and suddenly it is no longer swimming, just floating.  Sharkbody Abomination 1 is dead.

The sahuagin leader once again seems to do nothing that is visible to you.

Dajarkal remains near the back, but casts Healing Word at Arael for 3 points of healing.

Silent is up.

Silent uses Second Wind as a bonus action, stilling his mind as his master taught him. He heals 4 hit points. 

Noticing Keyo's incredible evasive maneuvers and Arael dropping unconscious again, he turns his spear on the remaining sharkbody abomination. 
Attack 12 Damage: 8   

The spear cuts deep into the creature's torso, as it faces you, enraged.

The two sahuagin that surround Keyo continue to press their attack:

Bite Attack: 23 Damage: 5
Claw Attack: 18 Damage: 3

Bite Attack: 18 Damage: 3
Claw Attack: 18 Damage: 2

Again, they cannot land a blow on you.

Sahuagin 3 attacks the gnome before it:

Bite Attack: 4 Damage: 4
Claw  Attack: 14 Damage: 3

A small slice with a claw, but Pockets has had worse.

The one remaining sharkbody abomination wants to pay back Silent for that last spear thrust:

Attack: 20 Damage: 9

It would have hit hard, if it had hit - in fact it does hit, but Silent's armour deflects the blow.