Caution Urged for Mariners During Peak Humpback Whale Season

More than 10,000 humpback whales migrate to Hawaii each winter to breed, nurse calves and raise their young.

Published on Feb. 6, 2026

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As humpback whale season reaches its peak in Hawaii, the Go Slow – Whales Below initiative is urging mariners to be mindful and exercise caution when out on the ocean, for the safety of the whales and everyone on the water. The initiative provides guidelines for vessel operators to travel at safe speeds and maintain proper distances from the whales.

Why it matters

A recent incident of a humpback whale calf being struck by a vessel highlights the need for increased awareness and precautions during this time of year when the whales are most active in Hawaiian waters. Preventing collisions and disturbances is crucial for protecting the whales and ensuring the safety of boaters.

The details

The Go Slow – Whales Below initiative is a cooperative effort between several state and federal agencies, as well as the Pacific Whale Foundation. The guidelines urge vessel operators to travel at speeds of 15 knots or less in waters 600 feet deep or less, and to reduce to 6 knots or less when approaching or departing whales within 400 yards. It is also illegal to approach within 100 yards of a humpback whale. Boaters are advised to be on the lookout for whales, especially curious calves that may surface unexpectedly. If a vessel-struck, entangled, or distressed whale is encountered, the public is instructed to maintain distance and report the incident to the NOAA Fisheries hotline or the U.S. Coast Guard.

  • Humpback whale season reaches its peak in Hawaii during the winter months.

The players

Go Slow – Whales Below initiative

A cooperative effort between the DLNR's Divisions of Aquatic Resources (DAR) and Boating and Ocean Recreation (DOBOR), the National Oceanic and Atmospheric Administration's (NOAA) Hawaiian Islands Humpback Whale National Marine Sanctuary, and the Pacific Whale Foundation.

NOAA Fisheries

The National Oceanic and Atmospheric Administration's agency responsible for the management, conservation, and protection of the nation's marine resources.

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What’s next

The DLNR and NOAA will continue to monitor whale activity and enforce the guidelines to protect the humpback whales during their peak season in Hawaii.

The takeaway

Increased awareness and adherence to the Go Slow – Whales Below initiative guidelines are crucial for safeguarding both the humpback whales and the boaters enjoying Hawaii's waters during this vibrant time of year.