US regulators on Tuesday banned swimming with Hawaii's spinner dolphins to protect the nocturnal animals from people seeking close encounters with the playful species. The National Oceanic and Atmospheric Administration rule under the Marine Mammal Protection Act prohibits swimming with or getting within 50 yards of a spinner dolphin that's within 2 nautical miles (or about 2.3 miles) of the shore of the main Hawaiian Islands, per the AP. The rule applies to boats, canoes, stand-up paddleboards, drones, or other objects.
Swimming with dolphins is a popular tourist activity in Hawaii. Several companies offer tours that take swimmers to areas frequented by dolphins with the aim of giving them an opportunity to get in the water with the animals. Spinner dolphins hunt in offshore waters at night, and during the day they use areas close to shore that have optimal environmental conditions to socialize, nurture their young, hide from predators, and rest in preparation for their nightly hunting.
Hawaii's spinner dolphins get their name from their habit of leaping in the air and spinning around. Some scientists warn that such behavior isn't always playfulness and can instead be an attempt to alert others to danger. NOAA also is proposing a regulation that would prohibit entering certain areas between 6am and 3pm in parts of the Big Island and Maui that are considered essential daytime habitats for spinner dolphins.
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