The Hawaiian Islands Humpback Whale National Marine Sanctuary is seeking volunteers to help with its annual count of humpback whales.

Volunteers will count humpback whales around the islands over a four-hour period and record their behavior.

This year, the Sanctuary Ocean Count will be conducted at more than 60 different shore sites around O'ahu, Kaua'i, and the Big Island. A separate organization conducts Maui County whale counts.

Counts will be held on the last Saturday of January, February, and March, from 8 a.m. to 12:15 p.m.

Online registration for the islands of Hawai'i and O'ahu is available at www.sanctuaryoceancount.org.

Find out more about the project at www.hawaiihumpbackwhale.noaa.gov.

To register by phone, call:

• O'ahu, 397-2651 ext. 253.

• Kaua'i, 246-2860.

• Big Island, Big Island 1-888-559-4253, ext. 253.