Spoiler (click to show/hide):
6vs5. Success!
Balling up the last of your strength both physically and mentally, you throw out your fist, hoping to close that eerie, glowing eye and force it to let you go! Your will and intent are strong, but the water slows down your strike, and your awkward positioning in it's grasp isn't helping as you simply strike away at the creature's head, getting a rubbery, dull thunk of a noise for your trouble as it wastes little time ot snatching your last free limb.
At least, that's how it would've played if you didn't happen to be at least a little bit gooey.
The tendril moves to crush your arm, seeking to break bones or cartilage, but your physiology causes your arm to simply be squished, the fist popping out like the last bit of toothpaste from it's container and projecting into the beast's gills! Not wasting any time, you dig your fingers into them, guessing that doing so would be... well it'd probably be about as pleasant as someone jamming their fingers into your mouth or nose, or perhaps more appropriately, into the entrance of a more land based life form's lungs. The creature's eye goes wide, and your otherwise dulled thoughts come back in a rush as it lets loose what could best be described as a distorted howl of pain and flinches away, allowing you to struggle and free yourself!
The glint of something eappears in the corner of your eye, a box, partially buried in the sand, with a recognizable symbol for emergency supplies on the top!
Look, all I'm saying is that Batboy is our lord and savior.