This is a single drop of seawater, magnified 25 times. The amazing image shows bacteria, worms, fish eggs, crab larva, diatoms, and much more. Think about THAT next time you swallow a mouthful of seawater.
This is not a single drop, some of these are a lot smaller than others, this is multiple shots stitched together into one frame, although they are all still found in seawater, you wouldn't see all this with just 25x magnification.