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Humpback Whale Trivia

 

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Question: How have we learned about whales?

Answer: Our knowledge of whales has come in two distinct phases: studies of dead whales from the whaling industry, mostly ending in the 1960s; and studies of living whales at sea, which began in the 1970s. There is still much that is unknown about humpback whale biology. Any future biologists out there?

 

Question: When was hunting for humpback whales banned?

Answer: The International Whaling Commission decided at its meeting in 1982 that there should be a pause (the 'moratorium') in commercial whaling on all whale stocks from 1985/86.

 

Question: How many blow holes does a humpback whale have?

Answer: A humpback whale has 2 blow holes on the top of its head. Toothed whales have only one blowhole. The warm moist lung air is mainly expelled from the blowholes as a cloud of condensation. It is this cloud of condensation that today helps us spot whales and in the whaling days, led to the famous..."Thar she blows".

 

Question: What is a head lunge?

Answer: A head lunge is one of many behaviors humpback whales can be seen performing during the winter months in Hawai'i. The head lunge is a competitive display in which the humpback whale lunges forward with its head raised above the water.

 

Question: What federal laws protect humpback whales?

Answer: The humpback whale is protected by the Endangered Species Act and the Marine Mammal Protection Act, making it illegal to harass, injure or kill a humpback whale in United States waters.

 

Question: Do all whales sing?

Answer: No female has ever been heard or seen singing. The male humpback whale song is unique in that it consists of a series of repeating patterns that gradually change over time. Yet all the singers in a population sing the same version of the ever-changing song at any one time; the whales in the Pacific sing one song and the whales in the Atlantic another. Scientists do not know why.

 

Question: Every whale has its claim to fame: The blue whale is known as the biggest whale (can be over 100 feet long and more than 110 tons). The sperm whale is known to be one of the deepest divers (depths of 10,500 feet have been recorded as it feeds on giant squid). The killer whale is one of the fastest swimmers. The humpback whale is known for its________.

Answer: The humpback is known for its songs. The complex series of sounds they make are called songs. Next time you are on or near the water, listen for a moment, maybe you will hear them!

 

Question: What is a "peduncle"?

Answer: The peduncle is the body part connecting the tail to the body. Humpback whales can be seen performing a variety of behaviors during the winter months in Hawai'i, one of which is the "peduncle slap", in which the whale throws its tail out of the water and in the process, slaps its peduncle on the surface.

 

Question: How long can a humpback whale hold its breath?

Answer: On average, adult humpbacks surface every 7-15 minutes to breathe but can remain submerged for up to 45 minutes. Calves must rise to the surface every 3-5 minutes. This behavior is easily spotted as the whale releases a "blow" that may be 10-20 feet tall. Whales typically exchange over 90% of the air in their lungs, making their lungs much more efficient than ours.

 

Question: A whale is a mammal: warm-blooded, able to breathe air, nurse their young and have hair. Where is the whale's hair located?

Answer: Stiff hairs come out of the top of tubercles, large bumps on the head and lower jaw. It is thought that these hairs may serve a sensory function. Humpbacks also have tubercles without hair on the leading edge of the flippers that reduce drag and increase lift. The humpback whale is extremely maneuverable and the acrobat of the whale world.

 

Question: Hawai'i's humpback whales migrate from Alaska to Hawai'i. How far is the round trip and what is the average speed by which they travel?

Answer: The round trip is about 5,000 miles and they travel approximately 3-7 miles per hour. Humpback whales breed, calve and nurse in Hawai'i in the winter (November-May), then migrate to the Gulf of Alaska and other areas in the North Pacific to feed primarily in the summer (May-November).

 

Question: What is a "spy hop"?

Answer: A "spy hop" is one of the behaviors humpback whales can be seen performing during the winter months in Hawai'i. To execute, a whale rises vertically toward the surface, with its head out of the water. Some believe this behavior allows the whale to look at activity above the surface.

 

Question: When does a whale become sexually mature?

Answer: Humpback whales become sexually mature between the ages of 4-8. A female gives birth every 2-3 three years and the pregnancy is 11-12 months.

 

Question: About how long does a calf stay with its mother?

Answer: A calf spends about one year with its mother. Calves are born in the warm shallow waters around Hawai'i, then travel with their mothers to Alaska for the summer feeding season. The following winter, some may accompany their mothers back to Hawai'i. These calves, now called yearlings become independent in route or while on the feeding grounds.

 

Question: Who has the final say in choosing the right mate...the male or the female humpback whale?

Answer: Scientists believe it is the female who makes the final decision.

 

Question: A group of cows is called a herd, a group of humpback whales is called a ___.

Answer: A group of humpback whales is called a group, and seems highly dependent on the sex of the whale. Female associations on the breeding grounds seem to be rare, but finding a mother/ calf pair is common. The proportion of these pairs with a male escort is consistently over 85 percent. Adult female whales may followed by groups of males (anywhere from two to over twenty).

 

Question: Where does the name "humpback" whale come from?

Answer: They are named humpbacks because of the distinct "hump" that appears when the whale arches its back when it dives.

 

Question: The scientific name of the humpback whale is Megaptera noveangliae. What does the genus name (first word) mean?

Answer: "Megaptera" means "giant wings" which refers to their large front flippers, called pectoral or pec fins. These fins are about 1/3 the length of the body or about 15 feet long in an adult humpback whale.

 

Question: By regulation, humpback whales cannot be approached closer than ___ yards.

Answer: All ocean users, including swimmers, snorkelers, divers, kayakers, jet skiers, boaters, windsurfers, or surfers should not approach a humpback whale closer than 100 yards, or 90 meters. Do not chase, closely approach, surround, swim with, or attempt to touch humpback whales. To report an approach violation or other incidences of humpback whale disturbance, please call the NOAA Office of Law Enforcement's 24-hour hotline at 1-800-853-1964.

 

Question: What are some human activities that can harm humpback whales?

Answer: Humpback whales face various anthropogenic threats, including the potential of getting hit by boats and entanglement in fishing nets and gear or other marine debris. There is also research on how noise in the water affects humpback whales.

 

Question: Who are the humpback whales' predators?

Answer: Killer whales are the main predators of humpback whales, although sharks have been known to attack young, sick or dead whales.

 

Question: Approximately how much do humpback whales eat a day during the feeding season?

Answer: It is estimated they eat an average of about 1 to 1.5 tons of krill and small fish per day during the summer months in the cold, nutrient rich waters of Alaska.

 

Question: The mouth of the humpback whale is about 1/3 the size of the body. How big is the tongue?

Answer: Humpback whales have a tongue that is about the size of Volkswagen bug! Interestingly, the opening at the back of the throat is about the size of a grapefruit, which means that a humpback whale would still have a hard time swallowing a large fish.

 

Question: How big is the average humpback whale?

Answer: Adult male humpback whales measure 38-42 feet in length and females are slightly larger, measuring 40-45 feet. For comparison, an average school bus is about 45 feet long.

 

Question: Humpback whales do not have teeth. In order to feed, what do they use?

Answer: They have baleen plates instead of teeth. A baleen whale has a series of 270-400 fringed overlapping plates that hang from each side of the upper jaw. These plates consist of fingernail like material that frays out into fine hairs on the ends. When the whale feeds, it takes in large volumes of water that passes through the baleen plates and strains its food from the water.


Question: Researchers are able to identify individual whales. We as humans are identified by our fingerprints. How would one identify different humpback whales?

Answer: Each humpback whale has a unique pattern on its fluke (tail). The underside of the tail fluke can be from all white to all black and is unique to each humpback. In addition to the pattern, the serrated edge of the fluke is also unique to each whale. Through careful study, the fluke pattern can be used to identify individual whales.

 

Question: Where in the world can we find humpback whales?

Answer: Humpback whales are found in most of the world's oceans. Most of them follow a regular migration route, spending their summers in temperate and polar waters for feeding and spending their winters in tropical waters for mating and calving. The one exception is in the Arabian Sea where a year-round, non-migratory population lives.

 

Question: How many whales are in Hawai'i each year?

Answer: Humpback whales were plentiful in oceans worldwide before the global population was depleted by commercial whaling at the start of the 20th century. In 1993 it was estimated that there were 6,000 whales in the North Pacific Ocean, and that 4,000 of those came to Hawaiʻi. Today, the population of humpback whales that uses Hawaiʻi's waters as their principle wintering ground is likely more than 10,000 animals. This number is based on a comprehensive research effort that occurred between 2004 and 2006 that estimated the population at approximately 10,000 animals, and the likelihood that the population is still increasing at some unknown rate.

However, not all individuals return each season to Hawai'i. Moreover, the varying lengths of each individual's stay complicate estimations of how many are found in Hawaiian waters during a given period.




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