The horn shark is a small species of shark found primarily in the shallow waters of the eastern Pacific Ocean, particularly around the coasts of California and Mexico. They are known for their distinctive, horn-like projections on their heads, which help them blend into rocky environments. Horn sharks typically grow to about 3 to 4 feet in length and are bottom-dwellers, often resting on the ocean floor during the day. These sharks are nocturnal feeders, primarily consuming crustaceans, mollusks, and small fish. They have a unique ability to use their strong jaws to crush hard-shelled prey. Horn sharks are generally considered harmless to humans and are often found in aquariums due to their manageable size and interesting behavior.