In the dead of night, just at the coast at an average sized beach city, the water black as night seemed to become darker. Though there were none to witness, if there were any they would say that it was as if a void of darkness was shifting around the waters. At about 2AM though, whatever was in the water decided to crash down onto the sand. Writhing and whirling the black ooze collected itself from the waters and immediately buried it's black mass into the sand.
The ooze wasn't sure how it knew, but the next day there will be people here for it to feed on. Not eat and kill though. The ooze had no hunger for human flesh or blood. The ooze wanted something else from the humans, the ooze wanted sexual fluids and more. If the ooze had a mouth it would giggle, knowing that once it imprints and modifies onto the first few humans there would be nothing to stop it. Why would anyone stop it? The ooze is bringing insurmountable pleasure and peace to humanity. All they have to do is submit.
Night turned to day and the ooze seemed to have slept a little, fantasizing about their prey and all the fun they'll have. The sun eventually rose on a beautiful Saturday morning. The ooze could feel the warm sun heat up the sand that the ooze slept under. People would be coming soon.
The ooze knew it's limits for now. It wasn't strong enough to transform people instantly yet, though it could split up it's mass to multiple people. Only a little bit of the ooze was needed for peak efficiency. Then, after corrupting the host enough the ooze would use them to reproduce and corrupt those around them. The ooze felt excited, ready for the first person to be lucky enough to walk by.
The ooze felt a foot step close, close enough for the ooze to reach out and stick a bit of ooze on a: