HONOLULU -- Ten California-based researchers said they now know great white sharks migrate from California to the Hawaiian Islands regularly.

Using satellite tags and acoustic tracking systems, The Royal Society said Great Whites come into Hawaiian waters at least once a year and may stay as long as two months.

Researchers said the great whites that visit Hawaii normally stay several miles offshore in deeper water.

They said they don't know why, but theorize they could be feeding on something, perhaps squid, or some other food source.

In California, the whites get closer to shore where they feed on seal populations.

When the great whites are in Hawaii, they move around a lot, but for the most part, they stay in about 300 feet of water, which may be they are rarely seen.