They're back: Humpback Whale spotted off Big Island

HONOLULU (HawaiiNewsNow) The season's first humpback whale has arrived in Hawaii.

The first confirmed sighting of a humpback whale was made in waters off the Big Island.

On Monday, Sea Quest tour operator Captain Tony Roensch witnessed two tail slaps from a humpback whale yearling in Honaunau Bay, the first confirmed whale sighting in the sanctuary this season.

Whale calves are vulnerable to vessel strikes because they are difficult to see as they rest just under the surface. Young whales also must surface more frequently.

NOAA is reminding boaters and other ocean users to keep a safe distance from these annual visitors..

Endangered humpback whales are protected in Hawai'i. Federal regulations prohibit approaching within 100 yards of whales when on the water, and 1,000 feet when operating an aircraft. These and other regulations apply to all ocean users, including vessel operators, kayakers, paddle boarders, windsurfers, swimmers and divers throughout the Hawaiian Islands.

"It's important for everyone to be extra vigilant during whale season, for their own safety and the protection of these magnificent animals," said Paul Wong, operations coordinator, Hawaiian Islands Humpback Whale National Marine Sanctuary.

Humpback whale season in Hawai'i generally runs from November through May, although whales may be encountered in limited numbers during other months. As many as 12,000 humpback whales winter in Hawaiian waters each year.

The season peaks in the spring.

If you come across an injured or entangled marine mammal, please maintain the required safe distance and call the NOAA Marine Mammal Hotline at 1-888-256-9840 immediately, or the U.S. Coast Guard on channel 16.

If reporting a suspected approach zone violation, please call the NOAA Fisheries Enforcement Hotline at 1-800-853-1964. Additional guidelines and safety tips can be found here.

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