No not really. You need to differ Manta Ray than Sting Ray. Sting Ray stings and it make them dangerous, however Manta Ray in the other hand, don’t have stings, they are very shy ocean creatures, therefore you need to follow the guide instruction before approaching them, such us to swim gently, not to close, don’t make too much sound, no touching etc, or else they will swim deeper to the ocean and you will lose the opportunity to take great photos with them.