The world about you is stunning, there is no comparison to great seas of the past from which you came. You came from an age of mammoth creatures, monsters that would dwarf even the greatest beasts of this worlds ocean now. This world is dieing, the sea's had once brimmed with life and stretched much greater distance. This ocean was barren in comparison from the one you came from, only the forms of small occasional life flitting through its great expanses, though not quite so large as you remember. The world has changed and it is evidenced by the coast, you are near land when once this had been miles from any continent.
However you are soon drawn out of your wonder, as your eyes focus on a group of strange creatures just in front of you. They were so odd, their beautiful sleek bodies with their bright fish tails and smooth skinned upper bodies. They had expressive beautiful faces with hair of all colors, lengths, and styles. They had luscious orbs of flesh bouncing in pairs on each of their chests. However another odd thing attracted your gaze, they had firm rounded butts sticking out behind them, and a v in the flesh on the front, almost as if their tail were attempting to split into two with a tight little slit in the flesh between them pronounced ever so slowly by puffy lips. They were so many sizes and seeming types, they had different eyes, and skin color, and hair and scales. Some were as small as a foot in length, others around six or seven. The small ones were much more numerous and they darted about the larger ones as they talked and laughed. There was nothing like them from your time, and you wondered what purpose they served in this one. Luckily for you, you were still buried, with just the orbs of your eyes poking out of the sand and a your jaws hanging open appeared to be nothing more than a cavern amongst all the rocks and sand around you, you were well hidden.
Well it was too as you soon saw, these creatures would have fled at the first sign of you. You were twenty feet long with long unforgiving jaws, bulbous reptilian eyes, and a long triangular head filled with cruel teeth attached to a large body with a stubby tail and 4 long fins that propelled you through the water. You were small for your kind in your age and still growing, you are a monster in this one. What seemed like a small shadow passed over you and for once you felt familiarity as you saw a shark dart down catch one of the smaller mermaids, one with long blond curls, a bouncy pair of breasts, and a pretty and innocent face. She looked up a moment, uncomprehending and still with a fading smile of joy on her face as the shark engulfed her up to her ass. The other mermaids started to scatter as the shark continued swimming, it's dinner's tail wildly flailing outside it's mouth before with a snap it gulped that down too. It quickly darted to snatch up another small mermaid, this one with red hair that hung to her shoulders and and a pretty little face that kept peeking back in terror at the approaching diner after his meal. You felt something else you had not felt for so long at the sight of pretty little butt clenching and unclenching with each wild swish of her tail, arousal.
The shark closed it's jaws about her right before she entered the safety of a rock cave. You watched the shark leisurely swim toward you, where a group of the little foot long mermaids was madly swimming away. The one in his mouth screamed and pushed pointlessly at the sharks jaws closed about her back and stomach before the shark gulped her down, giving you a view of her crying face at the jaws closed after her. The shark was already on his way toward the other four mermaids, they were delicious looking, and you wanted them, but you had to bide your time. But you understood their purpose now, Food.