Lost & Found at Sea

Thousands of years have passed, the Earth became completely flooded and humans have gone extinct. The tools they have left behind have proved useful for other species, and so, aquatic lifeforms have evolved to take their place in their biological niche. Civilization as we know it has restarted, albeit a bit differently, but even after all this time it looks like humans still have a great form of cultural influence over how this new society operates.