What are three adaptations of a dolphin?

1. Streamlined body: Dolphins have streamlined bodies that reduce drag in the water, making them fast and efficient swimmers. Their skin is also smooth and elastic, which reduces friction.

2. Echolocation: Dolphins use echolocation to navigate their environment and find food. They emit high-frequency sounds that bounce off objects and return to their ears, creating a mental picture of their surroundings.

3. Intelligence: Dolphins are highly intelligent creatures with large brains. They are capable of complex social behaviors, tool use, and learning. They are also self-aware and have been observed recognizing themselves in mirrors.