Electron Micrographs

Steve got me started on this. The photos are from Izismile. Some of the stuff is recognizable, some of it is plausible, and some of it I've never even heard of. Forminiferia? I had to look that one up. Wikipedia has a lot of scientific gooble-de-gook, which didn't really explain anything, but then they say

"They are usually less than 1 mm in size, but some are much larger, and the largest recorded specimen reached 19 cm."

 Okay, so we may not know what they are but at least we know how big they are. Then on the aquarium site Reefkeeping I found this:

Foraminiferans have been called the "the most common group of non-bacterial organisms in the world."

Infoplease also has an article that is at least partially comprehensible.