What kind of body shape do penguins have when diving in water How does this help in their survival?

When diving, penguins have a streamlined, torpedo-shaped body that reduces drag in the water. This hydrodynamic shape allows them to swim efficiently and quickly, helping them evade predators and catch prey. Additionally, their solid bones aid in diving by reducing buoyancy, enabling them to dive deeper and stay underwater longer, which enhances their survival in the oceanic environment.