Maui Whale Watching, Tours
Hawaii Visitor Information

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Maui Whale Watching, Tours - Visitor Information

The Hawaiian Islands are the only known breeding and birthing areas for Humpback whales in the United States. No wonder Maui Whale Watching in Hawaii is among the most popular commercial activities for both locals and tourists alike.

Each winter, the islands become home to as many as 10,000 Humpbacks, making the tropical, clear, shallow, and protected waters of Hawaii one of the best natural laboratories in the world to study Humpbacks and similarly, to book a whale watch.

There is no good data on when Humpbacks began to make this journey each year to spend winter months in the warm, hospitable Pacific waters surrounding the Hawaiian Islands. Some believe the mass migration of Humpback whales to Hawaiian waters did not begin until the twentieth century.

Humpback Whale Habits

Humpback whales' biological or scientific name is Megaptera noveangliae. They are called "kohola" in the native Hawaiian language. Two different populations of Humpback whales spend the warmer summer months in either the Arctic or Antarctic waters feeding on krill. As winter approaches they begin their annual migrations. Southern hemisphere Humpbacks head north in May to the central and southern Great Barrier Reef area of Australia.

Maui whale watchingNorthern hemisphere Humpbacks start their migration in October to the Hawaiian Islands. Calves are born in the warm waters of the Great Barrier Reef or Hawaii and begin their first migration with their mothers back toward the Arctic or Antarctica.

The round-trip distance they travel during this annual migration is up to 6,000 miles, one of the longest migration distances of any animal species. During their stay in Hawaii, they do not feed, but rely upon energy stored in their blubber. Instead of feeding, the whales devote most of their time to mating and bearing their calves.

Humpback whales become reproductively mature when they are between 4 and 8 years of age. As mentioned, they mate during their winter migration to warmer waters, and eleven to twelve months later, upon their return to winter breeding grounds, the mother gives birth to a single calf.

At birth, calves are approximately 13 feet long and weigh two tons. This changes quickly however, as the mother must feed her newborn about 100 pounds of milk each day for a period of five to seven months until it is weaned.

After weaning, the calf has doubled its length and has increased its weight five times, attaining a size of about 27 feet and 10 tons. Usually, a female Humpback will bear one calf every two or three years. The maximum rate of reproduction for the species is one calf per year, but this is seldom practiced as it puts quite a strain on the mother whale. Scientists estimate the average life span of Humpbacks in the wild to be between 30 and 40 years, although no one knows for certain.

Humpback Behavior

Well known for their acrobatic surface displays, Humpback whales are a favorite for whale watchers around the world. Whether there is any meaning inherent to these impressive displays, however, is still unknown. But you don't need to be a research scientist to experience and enjoy wild Humpback whales exhibiting a wide variety of behaviors. HawaiiActive.com is located on Maui and offers a variety of Whale watching tours on the island.

Of all the Hawaiian Islands, Maui has both a greater population of Humpbacks and thus more whale watching tours, primarily due to the relatively shallow and protected waters between the four islands of Maui, Molokai, Lanai, and Kahoolawe. During the ice age when ocean levels were much lower, these islands were connected by land. Today, referred to as "Maui Nui," they comprise Maui County.

Maui Whale Organizations

Maui whale toursA number of organizations have been formed on Maui to conduct Humpback Whale research. The two most prominent are Pacific Whale Foundation, founded in the 1970s by Greg Kaufman, conducts a large, commercial, whale-watching operation with half a dozen vessels docked in Lahaina and Maalaea harbors. It contains a non-profit education/research arm as well.

The Whale Trust was started a decade ago as strictly a research organization. It has three co-founders: Executive Director Meagan Jones; Jim Darling, Scientific Director; and photographer Charles "Flip" Nicklin.

The Whale Trust is presently pursuing a number of ongoing research experiments in Hawaii that are focused on: Humpback behavior; social norms; and communication. Here is some of what they have learned.

Humpback Whale Societies

Most Humpback social groups or communities are believed to be short-lived, with the longest lasting bond being between mother and calf. Still, there are hints of unexplored depths of communication.

Humpback Feeding

Humpback whales will usually devour close to an entire ton of nourishment per day in order to survive the winter fasting period! A Humpback's diet consists of shrimp-like crustaceans called kill (euphausiids) and various types of small schooling fish, including herring, capelin, sand lance, and mackerel.

Female Status in the Hawaiian Breeding Grounds. One of the great unknowns in Humpback whale behavior is the status of the female: reproductive behavior and how they fit in to the social structure of Humpback breeding and calving grounds.

Humpback Courtship

Courtship rituals take place during the winter months, following migration toward the equator from summer feeding grounds closer to the poles.

Competition is usually fierce, and unrelated males dubbed escorts by researcher Louis Herman frequently trail females as well as mother-calf dyads. Groups of two to twenty males gather around a single female and exhibit a variety of behaviors over several hours to establish dominance of what is known as a competitive group.

Humpback Mating & Calving

During the winter, Humpback whales assemble in Hawaii's tropical waters to mate and to calve. Most of Hawaii's breeding grounds are toastier, shallower, and have fewer predators than summer feeding areas. But for now, the Humpbacks' mating game remains an enigma—one almost as profound as their song.

Maui Humpback whale watching

Humpback Cow & Calf

After a 10-12 month gestation period, female Humpbacks give birth to a single calf. Scientists have yet to officially record the live bearing of a Humpback calf. Females with newborn calves are commonly sighted throughout the winter, often in shallower or more inshore waters than the adult population.

Humpback Cow, Calf & Escort

Often a male escort accompanies or "escorts" a cow and calf on the breeding grounds. Surprisingly, these male escorts, revealed by genetic testing, do not father the calves'. Female Humpback Whales reach sexual maturity at four to six years, and birth calves every 2-3 years after that.

Humpback Yearlings & Sub-Adults

Calves typically nurse for the first 6-12 months of life, usually separating by the end of the first year. These year-old calves (yearlings) have often increased in weight by a factor of eight, and typically approach a length of nearly 9 meters-having nearly doubled in length.

Humpback Songs

Humpbacks are also very vocal, Uttering a wide range of sounds from unmusical noises—grunts, glubs, rumbles, sneers, and whines—to "singing" a long series of repeated phrases." Whale songs, occurring primarily during the breeding season, are sung only by males, and their composition slowly changes as they are being sung, with all singers in a population singing the same version at any one time. Why Humpback whales sing remains unknown

Male Humpback whales emit a complex series of loud sounds over and over known as song. Singing is usually heard during the breeding season, but also occurs during migration and in late summer and fall feeding areas. Although likely heard by sailors for centuries, the first recordings of Humpback songs were made via U.S. Navy ships in the late 1950s off Hawaii and Bermuda.

Maui whale watchingJim Darling of Maui's Whale Trust has been trying for 25 years to figure out the reasons for the Humpback whale song. These vocalizations, uttered only by males, are probably the longest and most elaborate known among animals Darling says. It has formal structure is built from a succession of themes, or melodies, with a striking range of tones, from piccolo chirrups to low-pitched foghorn blasts. Some scientists say they can detect rhymes.

These songs were generally thought to be for luring mates. But in 1997, when Darling, and fellow Whale Trust researcher Flip Nicklin discovered that singers in the 'Au'au Channel were attracting other males, not females.

Darling and the rest of the Whale Trust research confirms that females aren't attracted to the singing, but males are eager to investigate the sonic source. Maybe the song isn't for courting but for challenging another male, but when a new male joins a singer, Darling says, the two whales often just circle each other without any apparent aggression. They may even swim off together.

Darling says that all the Humpbacks within one region, the North Pacific, for example, sing the same song. And those Humpback populations in other parts of the world sing very different songs. The songs also change over time—from one year to the next, and even over a single breeding season.

Recently, researchers listening in on Humpbacks along northern feeding grounds have picked up singing during late autumn and again in spring and early summer. Navy hydrophones deployed on the sea bottom detect Humpbacks singing during their long migrations as well.

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