Kesennuma City has a thriving longline fishery for tuna and swordfish; it also lands a large number of sharks. Over time, the number of shark processors gradually increased and their processing techniques became fine-tuned through friendly rivalry, leading to Kesennuma becoming known as a leading shark fin producer. A northwesterly wind known as murone oroshi helps to sun-dry shark fins, a seasonal tradition in Kesennuma City in early winter. Visitors can enjoy shark fin in local delicacies such as sushi, rice bowls, and ramen, each part of the fin presenting a different flavor.