Hawaii Marine Mammal Guide
Dolphins
Dolphins are intelligent, social marine mammals that move through Hawaii's waters in groups, using whistles, clicks, body movement and echolocation. Bottlenose dolphins and spinner dolphins are among the species visitors may hear about most.
Dolphins in Hawaii
Dolphins are intelligent marine mammals that live, travel and hunt in social groups. Hawaiian waters are home to about 15 dolphin species, including bottlenose dolphins and spinner dolphins. They communicate with whistles, clicks, body movements and touch.
Dolphins also use echolocation, which works like natural sonar. They send out sound signals, then read the echoes as those sounds bounce back from fish, squid, rocks or other objects. This helps them find food and move through the ocean.
Spinner Dolphins and Resting Time
Spinner dolphins are one of the best-known dolphins in Hawaii. They often feed offshore at night and rest closer to shore during the day. Because daytime rest is important for their health, people should not chase, surround or try to swim with them.
Federal law in Hawaii prohibits swimming with, approaching or staying within 50 yards of Hawaiian spinner dolphins. The rule helps protect their resting behavior and gives them space to move naturally.
Respectful Dolphin Viewing
If you see dolphins while boating, kayaking, paddleboarding or swimming, stay calm and give them room. Do not feed, touch, chase, block or follow them. Let dolphins choose their own path, and move away slowly if your presence changes their behavior.
The best dolphin encounters happen with patience and respect. These are wild animals, not performers, and they need space to rest, hunt and care for their young. Related pages include the Hawaii fish guide, whales, Hawaiian monk seals, sea turtles and Hawaii snorkeling tours.
