Humpback whales are migratory animals. During the polar summer, they feed on plankton and small fish in Alaska or in Antartica. When the temperatures begin to decrease, they move to tropical seas to mate and breed.
Humpback whales choose shallow waters to protect calves from the main predators of baby whales, orcas and big sharks, as well as increasing their survival rate in the warmer environmental conditions.
While adult measure 15 to 18 meters, calves measure at birth 4,5 meters. They can grow of 100 kg per day during their first week of life. Calves need to breathe every three to five minutes and both the mother and the calf swim at the surface.
Sometimes, underwater bubbles can be perceived as an aggression signal so it is preferred to snorkel with them and stay at the surface.
Every year, the whales make a 5,600 km journey from Alaska to Maui, one of their favorite mating and calving grounds. It is estimated that 10 000 of them migrate to the shallow waters of the island.
Mexico Embark on a liveaboard to the Revillagigado archipelago, west of Mexico. You will dive on the island of Socorro, famous for its curious oceanic mantas. It is one of the few destinations where you could dive and see humpback whales.
In 2015 and 2016, less humpback whales have been spotted, as the water temperature was 2°C above average. They are back since 2017. It is estimated that close to 1000 whales visit Madagascar each season. To see them, go either to Sainte-Marie or Nosy Be island.
Panama A good place to see them is in the marine park of Coiba island, in the Pacific Ocean. It has been estimated in 2015 by the National Oceanic and Atmospheric Administration (NOAA) that 500 humpback whales migrate through central America.
Ponta do Ouro and Tofo in Mozambique are also two favorites to spot humpback whales as they swim past the east African coastline. You may also spot southern right whales, whalesharks and oceanic mantas.
Tonga is a favorite of humpback whales from August to mid-September. If you are lucky you could hear male humpbacks “sing” to attract females. They do so by forcing air through their massive nasal cavities. You can snorkel with them or if you’re lucky, see them while diving.
Since 2002, French Polynesia has protected an area of 5 million km2, the second largest in the world. They migrate from Antartica to the warm waters of Moorea and Rurutu between June and early December, but September and October is when you’ll have greater chances to see them.
Header image: courtesy of Julien Hilt
What if there were more in the Oceans than what we see when we go diving? We have selected five documentaries involving the greatest oceanographers, marine enthusiasts, and journalists of our planet.
Charlotte, half French and half American, tells us all about her divemaster internship she did in Indonesia. Working as a management consultant in Sydney, Australia, she is passionate about scuba diving, sky diving (she has 80+ solo and group jumps so far!