Saw this video on another platform and the comments were all like “OMG ISA LEOPARD SEAL!”
Nah that’s a harbor seal - could even be a selkie
And while harbor seals may have “rosettes” and spots that are “leopard like” but leopard seals are VERY different than harbor seals 🦭
For anyone wondering what the differences are between these two magnificent species of seals, here’s a brief essay:
Size and Physical Appearance
Harbor seals: Relatively small and compact. Adults are typically 5–6 feet (1.5-1.8 m) long and weigh 180–285 pounds (80–130 kg), with males slightly larger than females
They have a spotted or mottled coat (gray, brown, or tan with darker spots), a rounded head, and a more “cute” or approachable look
Leopard seals: Much larger and more elongated/serpentine. Adults range from 7.9–11.5+ feet (2.4–3.5+ m), with females often larger than males (up to ~12.5 ft / 3.8 m)
They weigh 440–1,320 pounds (200–600 kg). Their coat is dark gray/black on the back with distinctive lighter spots (hence the “leopard” name), a large head, powerful jaws with prominent teeth, and a more streamlined, predatory build
Leopard seals are apex predators built for power and speed (up to ~24–25 mph / 38–40 km/h underwater), while harbor seals are more agile but far less imposing
Harbor seals: Found in temperate and subarctic coastal waters of the North Atlantic and North Pacific (e.g., along US coasts, Alaska, Europe)
They haul out on rocks, beaches, reefs, sandbars, or ice in protected areas and are commonly seen near human-populated coastlines
Leopard seals: Primarily Antarctic and subantarctic, associated with pack ice (pagophilic)
They are solitary and range across the Southern Ocean, with occasional vagrants reaching southern Australia, South America, or New Zealand
They prefer ice floes and areas near penguin colonies
Harbor seals live in milder, coastal environments; leopard seals thrive in extreme polar conditions with thick blubber for insulation
Harbor seals: Primarily fish eaters (generalist but focused on fish, plus shellfish, squid, and crustaceans)
They forage in shallow to moderate depths in coastal and estuarine waters
Leopard seals: Highly opportunistic apex predators with a broad diet including krill, fish, squid, cephalopods, seabirds (especially penguins), and even other pinnipeds (e.g., seal pups)
They are known for aggressive hunting tactics, like thrashing penguins to “deglove” them for blubber. Some individuals specialize (e.g., penguin focused or krill focused)
Leopard seals sit much higher in the food chain and are one of the few seals that regularly prey on other marine mammals; their only natural predator is the orca
Behavior and Social Structure
Harbor seals: Often haul out in small to moderate groups but are not highly social
They are relatively quiet (growls, whistles) and can be wary but tolerant of humans in some areas
Pups are born on land/rock and swim soon after
Leopard seals: Mostly solitary (non gregarious). They are more vocal and known for their loud, haunting calls
Females are larger and give birth on ice
They are powerful, fast swimmers and can be quite bold or aggressive
Lifespan and Conservation
Both species can live 25–30 years
Harbor seals are common in many areas and protected under laws like the US Marine Mammal Protection Act. Leopard seals are also protected and not currently of major conservation concern, though they face climate-related ice habitat changes
