Whales of Antarctica

Eight large whales feed in Antarctic waters, and a cruise to the Antarctic Peninsula is most likely to show you two of them: the humpback and the Antarctic minke, both named as likely sightings in Peninsula bays by the operators that run whale voyages.¹² Killer whales are common, fin whales are back in big feeding groups off Elephant Island, and blue, sei, southern right and sperm whales are the rare finds, seen more often around South Georgia than on the Peninsula.³⁴ Many of the baleen whales migrate to tropical waters to breed in winter.⁵

What types of whales live in Antarctica?

Six baleen whales (humpback, Antarctic minke, fin, blue, sei and southern right) and two large toothed whales (the killer whale and the sperm whale) are the ones a traveler can hope to see. Baleen whales strain krill through plates of baleen; toothed whales have true teeth and catch single prey.⁶⁷ Rarely seen beaked whales live here too: a 2001 estimate ranks the southern bottlenose whale second in number only to the Antarctic minke, and Quark lists Arnoux's beaked whale among past sightings.⁸⁹

Categories are from the IUCN Red List dataset on GBIF, read October 15, 2026, and, for the Antarctic blue whale, the IUCN Cetacean Specialist Group.²³²⁴

When is the best time to see whales in Antarctica?

January to March. Humpback numbers along the Peninsula climb through December and level off at a high by mid-January, and every dedicated whale voyage we found for 2026-27 sails in March.^11252627

If you want penguin chicks too, go from late December to mid-January, when Adélie and chinstrap chicks hatch and humpbacks are near their peak.³⁰¹¹ Our Antarctic wildlife calendar adds penguins, seals and seabirds month by month, and our best time to visit Antarctica guide adds weather and fares.

Where are the best places to see whales in Antarctica?

On a standard Peninsula cruise, the Gerlache Strait and the glacier bays off it; for fin whales, Elephant Island; for the widest mix, including blue and right whales, South Georgia.

How many humpback whales are in Antarctica?

Tens of thousands, and rising, though no one has counted them all. The International Whaling Commission's estimate for the partly surveyed Antarctic feeding grounds rose from 10,230 for 1985/86 to 1990/91 to 42,000 for 1991/92 to 2003/04.³¹ In the Bransfield and Gerlache straits alone, the 2019/20 survey put the peak at 19,107, against about 7,000 in 2000.¹¹ Around South Georgia, British Antarctic Survey expeditions sighted 790 humpbacks in 23 survey days, and preliminary estimates suggest more than 20,000 now feed there each summer.³²

Those South Georgia humpbacks show how far the recovery from whaling has come. They were the first major target of Antarctic whaling, with nearly 25,000 caught around the island between 1904 and 1916, and their western South Atlantic population fell from nearly 27,000 in 1830 to about 450 in the mid-1950s. By 2019 it was back to an estimated 24,900, about 93% of its size before whaling.³³ In all, Southern Hemisphere whaling killed more than 1.8 million whales of 10 species before the moratorium.³³ Blue and fin whales, below, are much further from their old numbers.

Do killer whales live in Antarctica?

Yes, and the Southern Ocean holds what the whale biologist Robert Pitman calls the largest concentration of killer whales anywhere on earth. IWC survey data put the summer population at 25,000 to 27,000 in 2001, likely a minimum, he notes, because many stay inside the pack ice where survey ships did not go.⁸ The Australian Antarctic Division puts the population at about 70,000, and because small calves have been seen in midwinter, it calls orcas the only whale known to breed in Antarctic waters.⁷

Antarctic killer whales come in distinct types that look, hunt and live differently:⁸

On a Peninsula cruise you are most likely to meet the Gerlache type; the Ross Sea type needs a Ross Sea voyage.

Are there blue whales in Antarctica?

Yes, but they are still rare. Whaling cut Antarctic blue whales from about 225,000 to probably fewer than 2,000, with 30,000 killed at South Georgia in the 1930/31 season alone.¹⁶ The IWC's estimate rose from 450 for 1978/79 to 1983/84 to 2,300 for 1991/92 to 2003/04, growing at about 8.2% a year.³¹

They are starting to come back to their old feeding grounds. More than 21,000 miles (34,000 km) of systematic surveys around South Georgia between 1998 and 2018 produced a single blue whale sighting; a 2020 survey produced 58 sightings in about 1,500 miles (2,430 km) and photo-identified 23 individuals.¹⁵ None of the 41 blue whales photographed at South Georgia between 2011 and 2020 matched any of the 517 whales in the Antarctic photo catalog.¹⁵

Their conservation status depends on which listing you read. The IUCN Red List rates the blue whale as a species Endangered, and lists the Antarctic subspecies (Balaenoptera musculus intermedia) separately as Critically Endangered, according to the IUCN's own Cetacean Specialist Group.²³²⁴ The British Antarctic Survey and the South Georgia government both call the Antarctic blue whale critically endangered, in line with the subspecies listing, while the Australian Antarctic Division's blue whale page gives its status as endangered.³²⁴¹⁶

Where do minke whales live in Antarctica?

In and around the sea ice. The Antarctic minke is the most ice-adapted of the baleen whales: it has been seen hundreds of kilometers (well over 100 miles) into heavy pack ice in midwinter, breathes through narrow cracks in heavy ice, and in summer favors open pack with water between the floes.⁵ It is also the most numerous whale in Antarctic waters; the IWC's latest Southern Hemisphere estimate is 515,000 for 1991/92 to 2003/04.⁸³¹

For travelers, minkes are the curious ones: they often swim repeatedly around small vessels, and go out of their way to approach a moving ship before veering off at speed.⁵

Where can you see fin whales in Antarctica?

Off Elephant Island and the northern tip of the Peninsula, late in the season. Scientists published the first documentation of large fin whale feeding aggregations there from expeditions in 2018 and 2019, all along Elephant Island's north coast.³ On an aerial survey between March 23 and April 24, 2018, they estimated 7,909 fin whales in the survey area, with a hotspot of about 3,600 around Elephant Island.³ That is a return from near extinction: more than 700,000 fin whales were killed in the Southern Ocean between 1904 and 1976, leaving 1 to 2% of a population of about 325,000, and the IUCN moved the species from Endangered to Vulnerable only in 2018.³ Quark's March marine mammal voyage looks for fin whales in the South Shetlands.⁹

Are there sperm, sei and southern right whales in Antarctica?

Yes, but they are the least likely of the eight on a Peninsula cruise.

• Sperm whales live in deep water from the equator to the edge of the Antarctic pack ice, but only males travel that far: as they grow older and larger they migrate toward the poles, while females stay in tropical waters.²²
• Sei whales are the most northerly of the Antarctic baleen whales, often north of the Polar Front in summer, though some feed in the southernmost navigable waters. Unlike the other rorquals they eat tiny copepods, skimming them with mouths open; whalers turned to them after blue and fin whales were decimated, and they were not protected until 1978.¹⁸
• Southern right whales range from about 20°S to 65°S and feed at high latitudes in summer.¹⁹ At South Georgia they were the most commonly reported whale until 2011, before rising humpback numbers overtook them.²⁰ The Southwest Atlantic population was estimated at 4,600 in 2019, growing about 7% a year.³¹

Which cruises are best for whale watching in Antarctica?

A March voyage that spends its days in the Gerlache Strait and the bays around it. Four operators run dedicated whale voyages there in March 2027, on seven ships, from $7,050 per person for a shared-cabin berth.²⁷

Our pick: Plancius if price decides it and you can share a cabin with strangers; the Quark trip if you want the voyage with whale scientists. Skip a March whale trip if penguin chicks are the main goal, since Adélie chicks are at sea by mid-February.³⁰ Any Peninsula cruise from late December on sails near the humpback peak; our cheapest way to Antarctica guide finds the lowest fares.¹¹

How close can you get to whales in Antarctica?

No closer than 100 feet (30 m) in a Zodiac or kayak, and 300 feet (100 m) in the ship, under IAATO's guidelines; anything closer happens only when a whale chooses to approach.³⁸

Boats never approach head-on, stay about an hour at most, and avoid the light green bubble patches feeding humpbacks make before surfacing; if a whale comes within 100 feet (30 m) on its own, the driver puts the engine in neutral until it is clear.³⁸ Our guide to Antarctica's visitor rules covers the rules ashore.