Continue on the beach

You're not tired and the sea breeze on the beach is wonderful. You're not even worred about sun-burn yet. You continue walking along the beach simply enjoying the day.

You see no-one else, human or 'monster' until you round a small point. You see a small beach and in the water in front of it three girls having a water fight, screaming and giggling. One has long blonde hair, one medium length raven hair and one short red hair. All are topless and they all have what you would guess at a glance were small A-cup breasts. They seem too engrosed in their game to notice you.

Just as you are about to call out to them you notice that their voices, even their giggles and squeals, are slightly more melodious than is natural. Suddenly one ducks under water and you see that below the waist she has a fish tail.