It's a fantasy role-playing game.

DM: You are Vex Vex'ahlia, a half-elf ranger . You are the member of the famous group of adventurers. Previously, The damage quickly reverts them out of their eel forms. The fight comes down to simply destroying as many of the tentacles as they can, hoping this will allow them to get away.
DM: You just move out of range of the kraken, but it does not see you because of your hide check earlier, so it does not get an attack of opportunity.
Player: Awesome. I'm gonna have Trinket, for my bonus action, swim up on top of the kraken's back.
DM: All right. We'll say Trinket's right there.
Player: And try to claw through, because he saw Grog get swallowed.
DM: Okay. There is Trinket, currently grappling onto him.
Player: He's just claws, like, thinking he's going to get to the belly. He's going to attack him with a claw attack.
DM: Okay, so make your claw attack against him.
