Which animals use the specialized roles of diver and barrier while participating in cooperative hunting?

I believe the answer is The Dolphins.
In their Cooperative hunting, The dolphins requires five of its members to form of barrier while one or two of them are herding (Driving) their preys toward the barriers. And each dolphins will always play the same role in their group just like what we see in a football team.

Ithink the answer is 56.

They make up examples of physical properties