While walking on the beach, you hear waves crashing into rocks, but the you hear a strange noise..

You walk over to the sound and peer over rocks, you see something..It has a fish like tail, you cover your mouth to not make any noise. You slip on a slippery rock. CRASH. The thing looks up, it sees you. It gets closer and closer..until its face to face with you, it growls..

"humans aren't allowed here.."

it growls louder

"This is my territory, not yours.."