What would happen to the number of sperm whales if a disease killed all seals?

The number of sperm whales would likely decrease if a disease killed all seals. Sperm whales are predators and rely on seals as a primary food source. Without seals, sperm whales would have to find other food sources, which could be difficult and lead to starvation. Additionally, the lack of seals could disrupt the food chain, affecting other species that sperm whales rely on for food.