I already rolled initiative on the other page, I got a 23.

"I won't say no to that!" Nylia says as she grabs a harpoon.

Initiative: 10

Attack: 21 Damage: 6

Athletics: 16

I say, "You use harpoons, I'll use my crossbow!"

Attack: 6 Damage: 11 + 4 radiant damage + 4

I used my Blood Maledict to cancel the disadvantage, by the way, so that should deal 3 extra damage, and I take 2 damage.

I have half my hit point maximum left.

Acrobatics check: 25

I rolled a 2, so I guess I fall into the water. 

"Javelins aren't my thing, but here goes!"

Initiative 18

Attack: 14 Damage: 1

Acrobatics: 9

(Oof.  Sploosh)

Initiative for Skulk: 6

The Caliban drops his oar into the bottom of the boat, tries to steady himself, and hurls a harpoon at the behemoth before him (Ranged harpoon attack: 23 | 5 piercing damage, if successful)

Athletics: 8

EDIT: Forgot to attack with disadvantage; therefore, here's the second attack roll: 17

Ox, Nylia, and Skulk find their marks, their harpoons followed by a volley from the rowboats beside them.

30 piercing damage.

The whale bellows and whips it's titanic tail, sending a massive wave towards the whalers. All but Nylia and Luc-Pierre are thrown of the boat, and the men in the rowboat to their right yell as their vessel is capsized. 

Dark shadows cut through the night waters, attracted by the blood of the whale which stains the sea, and Skulk and Dane become the prey of the reef sharks. 

Dane Attack: 6 Damage: 6I

Skulk Attack: 5 Damage: 6

A scream resounds through the darkness as a sailor is dragged down into the deep, and the water turns red.

Round 2!

(Climbing back onto the boat costs all of your movement, but will provoke an opportunity attack from the sharks.)

Nylia reaches for her holy symbol and casts bless on Ox, Dane, and Skulk.

Athletics: 12

Skulk grabs the side of the rowboat and heaves himself aboard. 

Dane climbs back in the boat, trying to escape from the monsters below him. He casts out for another Javelin.  "How do I miss a creature the size of the ship?"  He steadies himself before being able to attack again.

Attack: 4 Damage: 3 + 1  (Oops that + 1d4 was supposed to be for the attack.

Acrobatics 11 + 2

Ox only grabs the side of the boat, remaining in the water, just to stabilize myself. I quickly reload the crossbow, and aim at the whale. 

(question, do you end up standing or prone when you pull yourself to the boat?)

8 + 3 to hit

Damage: 10 + 1 radiant damage

I rolled a natural one to hit, so I guess I instantly miss.

Sorry everyone.

(You end up standing.)

The sharks in the water snap at Skulk and Dane's legs as they pull themselves onto the rowboat.

Skulk Attack: 19 Damage: 5

Dane Attack: 13 Damage: 6

(Dane, I'm not sure how to read that action. Maybe reroll it? Skulk still has an attack to make, and both Skulk and Ox have to roll Athletics or Acrobatics.)

Sorry, that was another Javelin attack, 17 (13+4) to hit, 4 damage.  

If you want me to reroll it, here we go:

Attack: 12 Damage: 8

Bless's 1d4 to add to hit: 3

(I don't have to roll athletics or acrobatics, I'm in the water, right?)

(Correct, but you'll get sharks on you constantly.)

(Yep, that's why I'll need you to heal me)

(Just waiting up on Skulk.)