In the video, a man is standing in front of a large fish tank. He is wearing a green shirt and has a backpack on his back. The fish tank is filled with water and has several fish swimming in it. The man is speaking to the camera and making hand gestures as he talks. The fish tank is well-lit and the fish are of various sizes and colors. The man appears to be giving a presentation or a speech, and he seems to be knowledgeable about the subject matter.