Mobs who prey on Drowned

Drowned can be annoying while exploring, and even spawn during the day. When not attacking the player, drowned loiter around the sea floor. An interesting interaction I thought of is passive mobs that attack the undead. Shrimp, Worms, and Crabs can actively attack drowned, and ignore the player. While on the sea floor, these mobs will feed on the drowned, reducing their numbers, and making the ocean experience less stressful. It would also bring a splash of new life to the ocean, one of the most biodiverse locations on the planet.