* Hunting: The rostrum helps orcas to grab and hold their prey, like fish, seals, and even larger whales. Its sharp edges allow for a firm grip, and the powerful muscles in its jaws provide the force to subdue its catch.
* Social interactions: The rostrum is also used during social interactions within the pod. Orcas rub their rostrums against each other as a form of greeting or to establish social bonds.
* Navigation: The rostrum might also be used to detect vibrations and changes in pressure, which could help orcas navigate and locate prey in murky waters.
The rostrum is an important tool for orcas, allowing them to hunt effectively, interact with each other, and navigate their environment.