Tony Wu / Humpback whale (Megaptera novaeangliae australis) female with suckling calf. Vava'u Islands, Tonga.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) male calf playing at ocean surface after coming up to breathe. Vava'u Islands, Tonga.

Tony Wu / Humpback whale (Megaptera novaeangliae) lying on its side while executing a series of pectoral fin slaps on ocean surface. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female breaching. Vava'u, Tonga. Pacific Ocean.

Tony Wu / Humpback whale calf (Megaptera novaeangliae australis) female nudging her mother's mammary gland whilst trying to feed. Vava;u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female, stationary with calf heading to surface for breath of air. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whales (Megaptera novaeangliae) male during a competetive heat run. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) adult female at rest. The tubercles on the whale's head are clearly visible, as are the barnacles (Coronula diadema), whale lice (Cyamus boopis), and hairs on t...

Tony Wu / Humpback whale (Megaptera novaeangliae) female breaching together with her male calf. The calf had a large wound on his left peduncle area, one that appeared to be the result of a large bite, Vava'u,...

Tony Wu / Humpback whale (Megaptera novaeangliae) executing a dramatic tail slap, throwing up a cascade of water with its powerful fluke, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whales (Megaptera novaeangliae) unusual scene with two adults tail-slapping together in rough seas, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) male breaching in front of Hunga island in Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) male with his penis extended. Vava'u, Tonga. South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) calf 'Tahafa' male with injured pectoral fin and scarred body, with mother. Vava'u, Tonga, Pacific Ocean. COP26 Countdown Photo Competition 2021 Finalist.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf with his mother. Vava'u, Tonga. South Pacific.

Tony Wu / Humpback whales (Megaptera novaeangliae) in a heat run, with six males competing for the attention of a female that already has a calf. Vava'u, Kingdom of Tonga

Tony Wu / Humpback whale (Megaptera novaeangliae) rear view, taken while the whale was staying still and singing. Hunga Channel. Vava'u, Kingdom of Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaengliae) young male twirling and playing in the water, Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) males tail fluke, Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whales (Megaptera novaeangliae) engaged in courtship, with the male hovering above the female. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae), fluke of female with male calf playing below, Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) calf nuzzling its mother, Vava'u, Kingdom of Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) and her calf pursued by males during heat run. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale calf (Megaptera novaeangliae) resting under the chin of its mother. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf with his resting mother. Vava'u, Kingdom of Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) female with calf, pursued by males during heat run. Vava'u, Kingdom of Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) male resting, Vava'u, Kingdom of Tonga. Pacific Ocean.

Sue Flood / Humpback whale (Megaptera novaeangliae) calf just below the surface, Vava'u, Kingdom of Tonga, South Pacific, August

Doug Allan / Humpback whale (Megaptera novaeangliae) swimming below a whale watching boat, Sue Flood, photographer in boat, Vava'u, Kingdom of Tonga, South Pacific, September 2006, Model released

Doug Allan / Humpback whale (Megaptera novaeangliae) mother and calf, female with Remoras on underside, Vava'u, Kingdom of Tonga, South Pacific, September. Not available for ringtone/wallpaper use.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female with calf swimming above head. Rake marks on fluke created by Orca or False Killer whale predators. Vava'u Islands, Tonga.

Doug Perrine / humpback whale mother and calf, Megaptera novaeangliae, with remora fish around calf, Vava'u, Kingdom of Tonga, South Pacific

Doug Perrine / Humpback whale (Megaptera novaeangliae) calf with Remora fish (Echeneidae) on underside. Vava'u, Kingdom of Tonga, South Pacific.

Tony Wu / Aerial view of Luahaipo island in the Vava'u island group, Kingdom of Tonga.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female and calf swimming together at depth, ventral surfaces of both whales clearly visible. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale calf (Megaptera novaeangliae) male calf peeking out from underneath his pectoral fin as he swims upside-down beneath the ocean surface. His mother was resting about 20 meters below. Vav...

Tony Wu / Humpback whale calf (Megaptera novaeangliae australis) male calf launching partially out of the water with his mouth open while playing together with mother. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale calf (Megaptera novaeangliae australis) swimming just under the ocean surface, partially backlit by dramatic rays of sunlight. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale calf (Megaptera novaeangliae australis). faeces. Defecation like this from calves contributes to the cycling of nutrients from nutrient-rich high latitudes to less nutrient-abundant low...

Tony Wu / Humpback whale calf (Megaptera novaeangliae australis) female calf breaching sequence. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Aerial panorama of Fonua'one'one Island in the Vava'u island group of the Kingdom of Tonga, with a boat in the foreground for scale. From this perspective, it is clear that the island comprises only a...

Tony Wu / Aerial panorama of Fangasito Island in the Vava'u island, Kingdom of Tonga, showing fringing coral reef structure and white sand beaches around the island.

Tony Wu / Brown booby (Sula leucogaster) taking off from the ocean surface after catching a sardine, with the fish still struggling in the bird's beak. Vava'u, Tonga, South Pacific Ocean.

Tony Wu / Brown booby (Sula leucogaster) taking off from the ocean surface after catching a sardine, with the fish still struggling in the bird's beak. Vava'u, Tonga, South Pacific Ocean.

Tony Wu / Aerial panorama of Lua Ui Island in the Vava'u island group, Kingdom of Tonga.

Tony Wu / Aerial panorama of Eueiki Island, Vava'u island group of the Kingdom of Tonga

Tony Wu / Aerial panorama of Taula Island in the Vava'u island group, Kingdom of Tonga

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis) executing face flop after breaching. Vava'u, Tonga, South Pacific. Sequence 2/2.

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis) executing face flop after breaching. Vava'u, Tonga, South Pacific. Sequence 1/2.

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis) breaching. Vava'u, Tonga, South Pacific. Sequence 3/3.

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis) breaching. Vava'u, Tonga, South Pacific. Sequence 2/3.

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis) breaching. Vava'u, Tonga, South Pacific. Sequence 3/3

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis), fluke of male as he dives. Vava'u, Tonga, South Pacific.

Tony Wu / Southern humpback whale (Megaptera novaeangliae australis) breaching. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) vocalising with head-down, attended to by Remoras (Echeneidae sp). Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae australis), male calf resting beneath his mother. Male escort visible in background. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) resting head down in water with fluke above the water. Peeling sking on the fluke likely due to normal sloughing off of skin but it may be sunburn fro...

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female at rest, with her male calf visible in the background, Vava'u, Tonga.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female calf playing, slapping the ocean surface, Vava'u, Tonga.

Tony Wu / Aerial panorama of Mounu Island Resort in Vava'u, Tonga. September 2017.

Tony Wu / Humpback whale (Megaptera novaeangliae) heat run with seven males, male blowing bubbles, likely a display of dominance. Vava'u, Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) close up of skin shed from fluke, possibly due to normal sloughing of skin or sunburn. Vava'u, Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) courtship, with the female above showing her abdomen and the male below. Vava'u, Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) calf, with this mother visible in the background. Vava'u, Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) male blowing bubbles, likely a display of dominance during heat run. The male had a small portion of his penis protruding. Vava'u, Tonga. Pacific Ocean.

Doug Perrine / View from Mount Talau, Neiafu, Vava'u, Kingdom of Tonga. September 2017.

Doug Perrine / Humpback whale (Megaptera novaeangliae) mother supporting her calf at the water surface, Vava'u, Kingdom of Tonga, South Pacific. September. Both mother and baby have remora fish attached to their und...

Doug Perrine / Humpback whale (Megaptera novaeangliae) mother supporting her calf at the water surface, Vava'u, Kingdom of Tonga, South Pacific. September. Both mother and baby have remora fish attached to their und...

Tony Wu / Humpback whale (Megaptera novaengliae australis) 13 whales in group heat run, Vava'u, Tonga. September.

Tony Wu / Rough-toothed dolphins (Steno bredanensis) small group swimming at depth. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) rear view of males escort, with adult female and male calf in the background. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) adult female in foreground, with her male calf and their escort behind her. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) breaching, Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf nursing from mother. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale calf (Megaptera novaeangliae) male resting beneath his resting mother. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf relaxing with his mother and an escort whale in the background. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) calf breaching. Vava'u, Tonga, South Pacific.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf landing after breaching. Vava'u, Tonga, South Pacific.

Tony Wu / Sperm whale (Physeter macrocephalus) vertebrae that was stranded on the small island in Vava'u, Tonga, Pacific Ocean

Tony Wu / Humpback whale (Megaptera novaeangliae) female executing a reverse tail slap, with dorsal surface hitting the surface of the ocean, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) female executing a reverse tail slap, with dorsal surface hitting the surface of the ocean, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) male extending his pectoral fins into the air, social behaviour, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) male on its side, getting ready to slap its pectoral fin on the ocean surface, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) pectoral fin raised in late afternoon sunlight near coast, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) close up of female with open nostrils surfacing to breathe, note the whale lice (Cyamus boopis) Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) male lunging whilst coming up to breathe, during heat run, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) with tubercles on the whale's head clearly visible, they contain a hair follicle, and may be for used for sensory purposes, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) male lunging whilst coming up to breathe, during heat run, Vava'u, Tonga, South Pacific Note baleen whales have two blowholes, whereas toothed whales only have...

Tony Wu / Humpback whale (Megaptera novaeangliae) female adult resting vertically in the water with her fluke protruding from the surface, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) executing a forward face-flop breach, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) female performing a tail slap, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) tail fluke raised in evening light, set against a backdrop of dark skies and stormy seas, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) female diving showing her tail fluke, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) female with the right half of her fluke missing, this whale's nickname is Konga hiku, which means half tail in Tonga, South Pacificn, Vava'u, Tonga, South Pacif...

Tony Wu / Humpback whale (Megaptera novaeangliae) female resting head down with tail fluke at surface, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whale (Megaptera novaeangliae) female extending her pectoral flukes into the air to slap the water for attention from males, Vava'u, Tonga, South Pacific