Megamouth shark On May 1, 2017, a nearly deceased megamouth shark washed up at Barangay Baluarte in the Misamis Oriental, a region in the Northern Mindanao of the Philippines. The estimated shark was buried to prevent locals from consuming the fish, as authorities were unsure of the cause of death. On May 22, 2017, a live megamouth shark was found in a fishing net off Sunosaki lighthouse in Tateyama, Chiba Prefecture, Japan. The estimated to female was filmed by an Asahi Shimbun photographer and examined by a TV celebrity marine biologist who calls himself Sakana-kun, or Fish Kid. The shark died the
Robot fish instead of forward swimming only. The shapes and sizes of fins vary drastically in living fish, but they all help to accomplish a high level of propulsion through the water. In order for robot fish to achieve the same type of rapid and maneuverable propulsion, robot fish need multiple control surfaces. The propulsive performance is related to the position, mobility, and hydrodynamic characteristics of the control surfaces. The key to controlling a multi-joint robotic fish is creating a simplified mechanism that is able to generate a reasonable amount of control. Designers should consider some important factors, including lateral body motions,