Baleen whales produce a number of vocalizations, notably the songs of the humpback whale. Hervey Bay is a stopover for mature female humpback whales. The whale was observed interacting with a Humpback whale. Humpback whales also display this behaviour. Other whales, such as humpback whales, can also be entangled. Humpback whale births have been rarely observed. Whales produce a great variety of vocalizations, notably the extended songs of the humpback whale. The archipelago is also a part of wintering grounds for humpback whales in north pacific. There have been unconfirmed sightings of humpback whales in recent years. With the exception of the humpback whale, it is largely unknown when whales migrate. Some suggest that lobtailing in humpback whales is a means of foraging. Some other species such as humpback whales are also known to display. The great white shark is another confirmed predator of the humpback whale. Confirmations in Rarotonga have been increased recently where interactions with humpback whales occur on occasions. Bubble-net feeding is a cooperative feeding method used by groups of humpback whales.