In the Ultimate Dissectors hunting team, the battle formations had meanings that were already explained to the sharks by Sebastian. Attack formation meant that all the sharks with some degree of offensive skills should all join in the battle.
All-out attack formation meant that everybody was attacking. As Great White Sharks, even Queen Heareth who was a pure healer domain magic shark had the basic biting offensive skills of a shark.
Stand-by formation meant that the sharks should hover in one place while staying alert to their surroundings in anticipation of battle at any moment.
Defense formation meant that every shark with some degree of defensive skills was to all help in making sure the other sharks were protected.
All-out defense formation of course meant that every shark was defending. As Great White Sharks with a high-ranked bloodline for magic, it was a given that they all had the basic magic shield so this battle formation was not unrealistic.