So many hitchhikers,Heres another one I just found.

[reefbound]

Anyone ever seen anything like this...It reminds me of a trilobite (spelling) from the dinosaur days... you can make out the outline and ribs down its back...I know its alive because its leaving little white pellets behind it as it moves along the rock... I thought it was coralline algae at first.


EDIT: Never mind I did some searching and found out I have a Chiton,a very nice addition...

 

[Fluff]

Yep, great algae grazer. Congrats!

 

[reefbound]

Yep, great algae grazer. Congrats!

although, it looks like it only eating the coralline algae.

 

[Fluff]

More likely it is grazing on film algae that is coating your rocks.