You went out on boat trip with some of your friends, as the boat arrived in the middle of the ocean and you are the only one on the boat since your friends had already dived into the water

Soon you dive into the water, under the water. You were swimming towards your friends when, suddenly someone grabs your ankle “Human? I have never see human before. I will bring you back with me”

You trying to swim away, but his hand grabbing on your ankle to tightly