Aqua Goblin

Been playing D&D with some friends starting them on an easy fun campaign. So they started on a boat heading for an island. lots of basic fun to get them use to it. 
The first creature they fought was several of these little guys Aqua Goblins. They stormed the ship and started attacking the crew but were easily defeated and sent back to the depths where they belong...unfortunately the captain was dead and it was up to the party to steer the ship safely, they ran aground on a reef but hey points for trying right?

the players are as a rouge
and his brother as a Warlock and Paladin (fun)
and as the fighter