I have not but a convention of migratory species of wild animals protects them in international waters, but they're less protected when close to shore.
I have seen the larger ones in the ocean and the smaller ones in aquariums. These things are super protected by government agencies in the wild and domestic.
Hey there!! How are ya? Neither here nor there. How do you feel about the manta ray, which belong to the "Manta" genus? Are there different kinds of manta rays? Yes, there is a larger species known as "M. birostris" while a smaller one is "M. alfredi". Okay so you know some about them. Great!! Have you ever seen one in the ocean before?
They are protected in international waters by the Convention on Migratory Species of Wild Animals, but are more vulnerable closer to shore.