The dolphin is a species of mammal, one of the most representative species of the order Odontocetes, distributed in temperate and tropical waters around the world, let's learn about it.

1. Appearance: Dolphins are rounded in appearance, usually between 1 meter and 4 meters in length, and weigh about 100 kg to 1 ton.

Their skin is smooth and elastic, and their body color is diverse, ranging from gray, and black to white.

2. Behavior: Dolphins are animals with extremely high intelligence, possessing strong social skills and emotional expression.

They are excellent swimmers and masters of leaping out of the water, able to chase at high speed underwater and locate prey by ultrasonic.

3. Food: Dolphins mainly feed on fish, crustaceans, and cephalopods, but also eat shellfish, clams, and shrimps.

4. Distribution area: Dolphins are widely distributed in temperate and tropical waters around the world, including oceanic and offshore waters.

5. Species: There are more than 40 known species of dolphins, including common dolphins, killer whales, flat-headed dolphins, white dolphins, small Antarctic whales, etc.

6. Humans and dolphins: Dolphins are threatened by human activities, including pollution, changes in the marine environment, and overfishing.

Dolphins are usually domesticated and trained to perform various tricks and movements in front of an audience.

Compared with other aquatic animals, such as fish, dolphins possess greater social skills, intelligence, and emotional expression, and they also bond more easily with humans. As a result, dolphins are often one of the most popular animals in places such as aquariums or marine parks.

However, there are some controversial issues with captive dolphin domestication and display, such as the impact on animal welfare, possible abuse in the domestication process, and so on.

Therefore, relevant conservation policies and management regulations need to be developed when opening such venues to ensure that animal welfare is fully protected.

If you want to see dolphins up close, you can go to these places.

1. Marine parks: Marine parks usually have dolphin shows and exhibitions where visitors can see the activities and habits of dolphins up close. For example, Disney Sea World in the United States, Ocean Hall in Japan, Ocean Park in Hong Kong, etc.

2. Dolphin sanctuaries: Some countries or regions have set up dolphin sanctuaries to protect the habitat and living environment of wild dolphins, and visitors can watch wild dolphins near the sanctuaries.

For example, the California Dolphin Sanctuary in the United States, the Dolphin Island Sanctuary in Australia, and the Chinese White Dolphin Sanctuary in the Pearl River Estuary in China, etc.

3. Dolphin-watching boats: Some places will have special dolphin-watching boats where tourists can watch the activities and living habits of dolphins on board, such as Hawaii, Puerto Rico, Mexico, New Zealand, and other places in the United States.