海豚是一种哺乳动物，具有以下特点：
智力高：海豚被认为是海洋中最聪明的动物之一，具有出色的学习和问题解决能力。
游泳速度快：海豚的身体流线型，肌肉发达，可以以每小时40公里的速度迅速游动。
潜水能力强：海豚可以在水下潜水数百米，甚至更深，以寻找食物和逃避捕食者。
社会性强：海豚通常以群体生活，形成紧密的社会结构，彼此之间有着复杂的社交行为和沟通方式。
发达的听觉和声音产生能力：海豚依靠超声波进行定位、交流和捕食，可以发出各种各样的声音。
爱玩和好奇心强：海豚喜欢与人类互动，喜欢跳跃、翻滚和玩耍。
对环境敏感：海豚对水质、温度和声音等环境因素非常敏感，对环境的变化有较强的适应能力。
Summary in English:
Dolphins are highly intelligent mammals with remarkable learning and problem-solving abilities. They are known for their high swimming speed, reaching up to 40 kilometers per hour. Dolphins have strong diving capabilities, allowing them to dive several hundred meters deep to search for food and evade predators. They are highly social animals, living in tight-knit groups with complex social behaviors and communication methods. Dolphins rely on echolocation for navigation, communication, and hunting, producing a wide range of sounds. They are playful, curious, and enjoy interacting with humans. Dolphins are sensitive to their environment, including water quality, temperature, and sound, and have strong adaptability to environmental changes.
