I think some of u might see these stuff before. But for those like big stuff, maybe they did not realize actually these kind of stuff are exist in our seas. They are small and some of them can camouflage very well until we unable to spot them even they are just in front of your eyes. Need good macro eyes then can find them. We have this kind of service. Believe it or not?
Robust Ghost Pipefish
Juvenile Sea Moth