OK lets get serious about these little suckers.
I did the half hour lecture on what is affectionately known as "stroms" 101 but I will condense it as best I can in non scientific speak.

Stroms are the oldest still living thing on earth - millions of years ago they lived in the ocean.
They produced sufficient oxygen for human life as we know it to form.
They are a single celled organism.
They only exist now in two places on earth - Shark Bay WA and the Bahamas.
These particular very handsome decendents are many thousands of years old - I have to ask if you just sit around doing nothing but look cute why not! I first saw them ten years ago and they surely haven't changed. My friend the Oceanographer really did enjoy meeting them after truely giving lectures on them for many years.
They are very fragile and in the bottom photo you can see the damage done by horse drawn carts of wool pulled across them sixty years ago.
Fortunately people do use the boardwalks and they are being cared for.

There will be a pop quiz on this later so best you get it all down!!