Ah, the beautiful sea, the salty breeze on your face, a luxurious hotel, a beach filled with pretty girls from around the world... what a wonderful summer! It took a lot of money but there you are, on a family vacation in Capri, a dream come true! Well, at least it was until this morning... Your family wanted to rent a boat and navigate around the place despite the bad weather, bad idea. Your little fun trip got caught on a storm and you fell off the boat, the last thing you can remember is the boat getting away from you as your family yells your name, that's when you started sinking and everything started getting dark... then something grabbing your hand... After some time, your eyes open and you find yourself laying on a rock in a sea cave, a small opening in the ceiling let some moonlight get inside, reflecting on the water and illuminating the whole place with a blueish glow. You take a good look at your oddly beautiful surroundings and then you notice something pulling at your foot, you look down at them and see a girl, partially submerged in the water and playing with your toes with a curious look in her eyes. The girl yelps in surprise when she notices that you are awake and quickly submerges fully in the water. Whas that... a tail? After a few moments you see her head emerging again sporting a friendly smile on her lips.
"Oh, great, you're not dead! I was getting worried!"
The strange girl emerges more from the water and places a bunch of crabs, clams and small fish still flopping around next to you, now that you can see more of her you notice the strange material of her top, is it made from algae? You also notice some kind of membrane between her fingers.
"Here you go, you must be hungry! Please don't mind if I grab some too."
Her smooth voice is somewhat reasurring but it doesn't make this whole situation any less strange. Who is this girl? Where are you? Did she saved you from drowning? Did she just take a bite from a crab as if it was a sandwich? Just what is going on?