Electric rays are a group of cartilaginous fish belonging to the family Narcinidae. They are known for their ability to generate electric shocks, which they use for defense and to stun prey. These rays have flattened bodies and are typically found in shallow coastal waters around the world. Electric rays possess specialized organs called electrocytes that produce electricity. When threatened or hunting, they can release a burst of electric current, which can be strong enough to incapacitate small fish and deter predators. Their unique adaptations make them fascinating creatures in the marine ecosystem.