Blue bug/pod/chiton/flatworm???

[Bugeater281]

Hoping someone can help me figure out what these are. I’ve never seen this type of hitchhiker before. They are tiny, but move weird. Like they don’t seem to glide like flatworms, or walk lake copepods. It’s almost like a millipede type movement. They appear blue. Photo is under a 14k metal halide. I found a post about blue acro eating bugs. But these don’t look the the same. And they don’t seem to be on my coral at all. But they are all over the rocks. Photos is kinda crappy due too their size. They almost look like tiny chitons. But they flex in the middle when turning. I don’t think chitons do that. So any help would be appreciated.

 

[Bugeater281]

I’m just going to assume they are pods for now. And keep an eye on my coral.

 

[homer1475]

Amphipods I would assume from your description.

Google image amphipods and see if they match.

 

[Bugeater281]

Amphipods I would assume from your description.

Google image amphipods and see if they match.

They seem way too small to be amphipods. I always thought amphipods where larger than copepods. These things are the size on copepods.

 

[homer1475]

Copepods usually are so small they can't be seen with the naked eye. Least not on your rocks, or they look like tiny specks of sand that move. Amphipods are larger then copepods, and have that C shape to them that you described in the OP.

Larger amphipods are what most people see and just naturally call them copepods.

 

[Bugeater281]

Copepods usually are so small they can't be seen with the naked eye. Least not on your rocks, or they look like tiny specks of sand that move. Amphipods are larger then copepods, and have that C shape to them that you described in the OP.

Larger amphipods are what most people see and just naturally call them copepods.

I should have more descriptive. They move in a c shape sideway. Like a flatworm can do. The can bend sideways.