Add a diagram or a photo, better still both!

[whyte]

http://zooniverse-demo.s3-website-us-east-1.amazonaws.com/plankton/#/science/images

This is a lot of text! It would be great if there were a couple of images and diagrams to explain what is going on. I think people might be more likely to read some of it if it was broken down.

[brian-c]

Added in 102beeb071d65df2f97b56318085c7c655855f51