The video shows a group of seals swimming in the water near a net. The net is white and appears to be made of a mesh-like material. The water is a dark blue color, and the seals are mostly gray with some white spots. The seals are moving around in the water, some are swimming near the net while others are further away. The video also includes text overlays that describe the seals as predators and mention that they are attacking the tuna.