Jeffrey Salazar
Harp seals are native to the northernmost Atlantic Ocean and Arctic Ocean, and their diet varies depending on the season and their age. Harp seal pups are born without a protective layer of fat and are nursed by their mothers for about 12 days, gaining about 5 pounds per day. After the nursing period, the mother leaves, and the pup must fend for itself, deriving energy from its fat reserves. During this time, the pup may lose up to 50% of its body weight and is vulnerable to predators. Harp seal pups eat a variety of foods as they grow, including fish and invertebrates.
| Characteristics | Values |
|---|---|
| Diet | Harp seals are carnivores and eat fish and crustaceans. Their diet includes capelin, herring, cod, arctic cod, halibut, sculpin, Greenland halibut, redfish, plaice, squid, crabs, amphipods, krill, shrimp, and more. They eat whatever is in season and available. |
| Eating Habits | Harp seals can go without food for several days and eat approximately 4%-6% of their body weight daily. They do not chew their food, instead swallowing it whole or piece by piece. They use their back teeth to crack shells. Harp seal pups feed on their mother's milk for about 12 days and gain about 5 pounds per day. |
| Habitat | Harp seals live in the cold waters of the North Atlantic and Arctic Oceans. |
| Migration | Harp seals are highly migratory and travel in large groups during seasonal migrations. Their annual migrations can be more than 3,100 miles round trip. |
| Hunting | Harp seals are agile hunters and can remain submerged for up to 15-16 minutes. They have excellent eyesight and hearing abilities, which help them detect prey. They can also sense vibrations in the water through their whiskers. |
| Lifespan | The maximum lifespan of a harp seal is approximately 25-30 years, with some living up to 35-40 years. |
| Reproduction | Harp seals reproduce via internal fertilization and give birth to live young. Pups are born on pack ice in late February to mid-March and are nursed for about 12 days. Female harp seals do not feed during this nursing period. |
| Physical Characteristics | Harp seal pups have long, woolly, white fur that helps absorb sunlight and trap heat. This fur lasts for about 3-4 weeks until they molt and develop a silver-gray coat with black spots. Adult harp seals are silver-gray with black markings and weigh between 115-140 kg. |
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What You'll Learn
Harp seal pup diet in the first two weeks
Harp seal pups are born without any protective fat. They have a white coat, which helps absorb sunlight and trap heat to keep them warm. For the first two weeks of their lives, harp seal pups feed on their mother's milk, which is high in fat (25-50%) and protein. During this time, the pups gain over 2 kilograms per day, and develop a thick layer of blubber.
After about 12 days, the mother seal abruptly leaves her pup, and it is forced to fend for itself. The pup is left on the ice and does not eat for about six weeks, during which time it may lose up to half of its body weight.
The mother's milk is crucial to the pup's survival during its first two weeks of life, as it is easy to digest and protects the pup from various diseases. The high fat content also provides the energy needed to survive in the harsh Arctic environment.
Once abandoned by their mother, the pups begin to transition to solid food. They start with smaller fish and invertebrates, such as krill and crustaceans, before moving on to larger fish and other prey as they grow and develop.
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Seasonal changes in diet
Harp seals are native to the northernmost Atlantic and Arctic Oceans, and their diet varies according to the season. They are carnivores, and their diet includes fish and crustaceans. They are able to detect fish and enemies quickly using their eyesight and hearing abilities. They can also sense vibrations in the water using their whiskers.
During the spring, harp seals tend to eat capelin, which is their favourite food. Capelin spawn in large groups near the shore during this time, making them easily accessible. They may also eat smaller fish such as herring and sand lance, as well as krill and amphipods, depending on their location and personal preference.
In the summer, capelin stop migrating for mating and move to deeper water, so harp seals shift their focus to bottom-dwelling crustaceans such as shrimp and crabs, or different types of fish such as sculpin, cod, or polar cod. Harp seals also tend to travel north to feed in the Arctic during the summer.
In the autumn, the diet of harp seals remains similar to that of the summer, with a focus on crustaceans and some fish.
During winter, harp seals conserve energy and endure long periods without food. Their thick coat of blubber serves as an energy storage tank, allowing them to go for extended periods without eating.
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How harp seal pups hunt
Harp seal pups are born without a protective layer of fat and are nursed by their mothers for about 12 days. During this time, they gain around five pounds per day and develop a thick blubber layer. After the nursing period, the mother seal abandons her pup, which is still unable to hunt for several weeks. The pup derives energy from its fat reserves and may lose up to 50% of its body weight.
Harp seal pups are born with long white fur, which helps them absorb sunlight and stay warm while they develop blubber. After about three to four weeks, the white fur is shed, and the pup enters the \"beater\" stage, slowly developing its signature silver-grey coat. The Arctic is a dangerous place for a small harp seal pup, with predators such as polar bears, wolves, and foxes. Young seals will molt several times until they get their signature coats.
Harp seal pups feed on their mother's milk for the first two weeks of their lives. After being abandoned, they must learn to hunt on their own. Interestingly, if the seal pup does not eat, its teeth will not grow. Harp seals are carnivores and eat fish and crustaceans. They can remain submerged for up to 15 minutes and can dive as deep as 1,300 feet, making them agile hunters. They can detect fish and enemies quickly with their round eyes and large irises, which help them see clearly underwater. Their whiskers help them sense vibrations in the water, allowing them to detect hidden prey even in dark or dim areas.
Harp seals travel and hunt in large groups, communicating with over 19 different types of sounds. They are highly migratory and can travel more than 3,100 miles round trip to feed. Harp seals eat at least 67 species of fish and 70 species of invertebrates, including crabs, amphipods, krill, and shrimp. Their diet varies throughout the year, depending on what is in season. In the spring, their favorite food, capelin, is available in large groups near the shore. They may also eat smaller fish such as herring and sand lance. In the summer, when capelin migrate to deeper waters, harp seals shift their focus to bottom-dwelling crustaceans or other types of fish, such as sculpin, cod, or polar cod.
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Harp seal pup diet vs adult diet
Harp seal pups are born without a protective layer of fat and rely on their mothers' milk for nutrition during their first two weeks of life. The mother seal abandons her pup after approximately 12 days, leaving the baby harp seal to fend for itself and learn to hunt on its own. During this time, the pup survives by deriving energy from its fat reserves and may lose up to 50% of its body weight.
The white fur of newborn harp seals helps absorb sunlight and trap heat to keep them warm while they develop their blubber layer. After about three to four weeks, the pups shed their white fur and slowly develop their signature silver-grey coat with black spots. This process of moulting occurs several times during their development.
Harp seal pups eat krill and other pelagic crustaceans, and as they grow, their diet diversifies. Adult harp seals are carnivorous and have a varied diet that includes fish and crustaceans. They are agile hunters and can remain submerged for up to 15 minutes, enabling them to catch their prey. Their diet includes polar and arctic cod, capelin, herring, sculpin, Greenland halibut, redfish, plaice, and predators of codfish such as squid. They also consume crustaceans like crabs, amphipods, krill, and shrimp.
The diet of harp seals changes with the seasons. During the spring, they feed on fish like capelin, herring, and sand lance, which are easily accessible near the shore. In the summer, when capelin migrate to deeper waters, harp seals shift their focus to bottom-dwelling crustaceans and other types of fish.
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Harp seal pup diet and energy conservation
Harp seal pups are born without a protective layer of fat to keep them warm, but they have a white coat of fur known as lanugo that helps absorb sunlight and trap heat. They feed on their mother's high-fat milk for the first 12 days of their lives, growing from 11 kg to around 80 pounds. During this time, they develop a thick layer of blubber, which acts as an energy storage tank, allowing them to go for extended periods without food later in their lives. After the nursing period, the mother seal leaves the pup on the ice to learn to hunt for itself. The pup stays on the ice without eating for about six weeks, losing up to half of its body weight before entering the water.
The transition to solid food for a harp seal pup usually starts with smaller fish like krill or crustaceans. Harp seals are carnivores and maintain a diet of fish and crustaceans. They can eat up to 4%-6% of their body weight daily, which for a 500 kg seal, would be about 30 kg of seafood a day. Their diet varies throughout the year, depending on what is in season. During the spring, their favorite food, capelin, is available in large groups near the shore. They may also eat smaller fish like herring, sand lance, and amphipods. In the summer, when capelin migrate to deeper waters, harp seals shift their focus to bottom-dwelling crustaceans like shrimp and crabs, or different types of fish like sculpin, cod, or polar cod. According to the Norwegian Ministry of Fisheries and Coastal Affairs, they eat more crustaceans during the summer and autumn and switch to fish during the spring.
Harp seals are excellent swimmers and can remain submerged for up to 15-16 minutes, making them agile hunters. They can detect fish or enemies quickly with their round eyes and large irises that pop out fully when they swim submerged. They also have whiskers that help them sense vibrations in the water, enabling them to hunt even in dark areas. They can produce a vacuum in their jaws to quickly filter large amounts of water and trap multiple tiny species. They feed and travel in large groups during seasonal migrations, which can be more than 3,100 miles round trip.
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Frequently asked questions
Harp seal pups feed on their mother's milk for the first 12 days of their lives. After this, the mother abandons the pup, and it has to learn to hunt on its own. If the pup doesn't eat, its teeth won't grow.
Harp seals are carnivores and eat a variety of fish and crustaceans. They are agile hunters, able to remain submerged for up to 15-16 minutes and can detect fish and enemies with their excellent eyesight and hearing. They eat many types of fish, including capelin, herring, and cod, as well as invertebrates such as crabs, krill, and shrimp.
Harp seal pups feed on their mother's milk, which is high in fat, for the first 12 days of their lives. During this time, they gain about 5 pounds per day and develop a thick blubber layer to keep them warm. After the nursing period, the pup doesn't eat for several weeks and loses up to 50% of its body weight. Once it starts feeding on its own, the diet of a juvenile harp seal consists of krill and other pelagic crustaceans. As it grows, its diet diversifies to include more types of fish and crustaceans.
