Creationists usually do not believe that all of today's living things came about from simple organisms changing slowly over time.

It's a very simple organism, as you'll see if you look at this one which I've stained.

We were too connected by now, like cells in a simple organism.

It is one of the simplest organisms with a nervous system.

From those simple starter organisms to the most complex plants and animals, water has played a critical role in survival ever since.

Changes can happen quickly in the smaller, simpler organisms.

The kind of life, if any, would be some simple bacteria-type organism.

This is one of the simplest organisms that we know about.

Probably a lot faster, since it seems to be a simpler organism.

Even so, in this simple organism you can see the first hint of a fish.