Estimated Wild Population
Grey seals have short necks, widely set nostrils, and few spots compared to some other seals. They can measure up to 11 feet long and weigh nearly 900 pounds. Females are silver-gray with scattered dark spots while males are dark gray with silver-gray spots. Grey seals are opportunistic predators, feeding on fish, crustaceans, and mollusks. Females reach sexual maturity after about four years and give birth to a single pup with dense, woolly white fur after an 11-month gestation period. Pups grow quickly by nursing on fat-rich milk.
Interesting Fact 1
When hunting, grey seals use their sensitive whiskers to detect hydrodynamic currents generated by schools of fish.
Interesting Fact 2
Powerful webbed flippers with strong claws help seals dive to depths of nearly 1,000 feet to catch fish.
Interesting Fact 3
Adults have two layers of thick fur and a thick blubber layer to keep them warm.
Commitment to Care
Lincoln Park Zoo prioritizes individual well-being over everything else. Guided by scientific research, staff and volunteers work to provide the best welfare outcomes for each individual in the zoo’s care.
Support Your Zoo
Animals Depend On People Too
When you ADOPT an animal, you support world-class animal care by helping to provide specially formulated diets, new habitat elements, and regular veterinary checkups.
The Wish List is full of one-of-a-kind items for the zoo’s animals, including nutritious snacks and enrichment items to keep them active and healthy.
Take Action With Us
Wildlife face many daunting challenges—some global, like planet-wide climate change, and some that affect individuals, like an animal ingesting plastic—but now is not the time to despair. None of these problems are too big for us to come together and solve.