* Herding: Dolphins work together to create a ring or a wall of bodies around a school of sardines, effectively trapping them in a smaller space.
* Bubble netting: Some species of dolphins, like the Pacific White-sided dolphin, create a curtain of bubbles around the school, confusing the sardines and driving them upwards, making them easier to catch.
* Wave riding: Dolphins can ride the waves created by their own bodies or by boats, which pushes the sardines closer together and forces them to the surface.
* Echolocation: Dolphins use echolocation to locate the school and identify individual sardines. This allows them to target specific fish within the school.
It's important to note that dolphins are highly social animals and their coordinated hunting strategies are a testament to their intelligence and teamwork. They are not simply chasing the sardines, but actively manipulating their behavior to create the most efficient hunting conditions.