In The Zombie Shadows Chapter 111

When Cat Dad's aircraft arrives at the beach, the native species are launching a roundup

The dolphins spread out in a fan shape, driving away large schools of fish, forcing the fish to gather in a group and move closer and closer to the encirclement of the killer whales.

Ethan the sea turtle dives into the water and works together with the sea lions to prevent the fish from sinking.

The space of the fish school is constantly being compressed, and they can only stay close together and swim non-stop, relying on their numerical advantage to resist external threats. Facing the approaching predators, each mutant fish wants to swim toward the center, causing the gathered "sphere" to shrink tighter and tighter.

Finally, the fish school was driven into the encirclement, and the dolphins stopped approaching. They gathered together in twos and threes and swam around the outside of the fish school to guard against prey escaping.