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September 11, 2026Short & citedBlog
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Field Notes • Marine Mammal

Leopard seal

The leopard seal (*Hydrurga leptonyx*) is a large true seal native to Antarctic and subantarctic waters.

Updated September 11, 20261 min readCited sources

The leopard seal is a large true seal native to Antarctic and subantarctic waters. It is known for its spotted coat and status as a top predator.

What it is

The leopard seal (*Hydrurga leptonyx*) is a large, spotted true seal with powerful jaws and a long body. It is the only species in its genus and one of the largest seals in the Antarctic region. Its common name comes from the dark spots on its coat.

Where it lives and what it eats

Leopard seals are mainly found in Antarctic pack ice and the surrounding Southern Ocean, occasionally reaching subantarctic islands. They are solitary, opportunistic carnivores that feed on penguins, fish, squid, krill, and other seals, making them apex predators in their ecosystem.

Conservation status

The leopard seal is listed as Least Concern on the IUCN Red List, indicating a stable population. While exact numbers are uncertain, the species remains widespread in its southern range.

In short

  • Largest seal in the genus *Hydrurga*
  • Apex predator of Antarctic waters
  • Least Concern conservation status
  • Solitary hunter with varied diet
Canadian angle

Leopard seals are of interest to Canadian readers because they are part of Antarctic and Southern Ocean wildlife, which is relevant to Canadian polar research, climate science, and expedition travel.

Quick questions

What is a leopard seal?
A leopard seal is a large Antarctic true seal species, *Hydrurga leptonyx*, known for its spotted coat and predatory diet.
Why is it called a leopard seal?
It is named for its dark, leopard-like spots.
Where do leopard seals live?
They live mainly in the Southern Ocean around Antarctica and subantarctic islands, especially near pack ice.

Sources

  1. Poseidon Expeditionshttps://poseidonexpeditions.com/about/articles/leopard-seal/
    Supports: Common names, scientific name, family, size, habitat, and population estimate.
  2. National Geographichttps://www.nationalgeographic.com/animals/mammals/facts/leopard-seal
    Supports: Scientific name, diet, size, lifespan, conservation status, and spotted coat name origin.
  3. Antarctic and Southern Ocean Coalitionhttps://www.asoc.org/learn/leopard-seals/
    Supports: Scientific name, length, weight, diet, lifespan, range, and conservation status.
  4. Leopard Seals.orghttps://www.leopardseals.org/fact-sheet/
    Supports: Only species in the genus *Hydrurga*, true seal classification, and population estimate context.