Fauna
Mammal

Leopard Seal

Hydrurga leptonyx

Also known as Sea Leopard

Leopard seals dominate Antarctic pack ice as solitary apex predators with unusually massive, snake-like heads and long foreflippers that grant exceptional agility in water. Unique tricuspid molars allow them to strain abundant krill directly from sea water, though they frequently ambush penguins along shoreline ice edges and hunt other seal species. Solitary during most of the year, adults vocalize underwater with deep, rhythmic calls that resonate for miles across frozen polar seas.

Apex PredatorMarine MammalAntarctic
Leopard Seal reference1 / 7
(c) Mike Bowie, some rights reserved (CC BY), uploaded by Mike Bowie · cc-by
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyAdélie Penguin, Crabeater Seal, Antarctic Krill
Predators
  • Orca
ThreatsClimate change, loss of sea ice, marine pollution
HabitatsPack ice, polar coasts, sub-Antarctic islands
Life span20–26 years
Classification
  1. FamilyPhocidae
  2. SpeciesHydrurga leptonyx
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is high
Large apex predator capable of severe bites; maintain a safe distance on land or in boats.
Why it is dangerous
Powerful jaws and long canines can inflict severe, potentially fatal trauma to humans in water or on ice.
How to recognize a risky encounter
Look for a massive, reptilian-shaped head, dark spotted silver-grey coat, and immense foreflippers.
What to do
Keep a distance of at least 15 meters on land or ice and never enter the water near individuals.
Responsible observation
  • Safe Distance: Maintain at least 15 meters on ice or land, as they move surprisingly fast.
  • Water Caution: Never dive or swim near active hunting zones around penguin colonies.
Related species
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