Hydrophilic Hearts, Marine Mammals

Bearded Seal

The weather here in New York has been awfully chilly lately, which has inspired me to write about an arctic species today.

bearded seal

The Bearded seal (Erignathus barbatus) gets its name from the whiskers on its face. At maturity adult seals have brown to gray fur. They can grow to be about 7 feet long, and on average weigh 400-500 lbs . Females are typically larger than males. In terms of habitat, bearded seals prefer pack ice and shallow water depths (less than 200 meters). These seals are benthic feeders, so they typically eat shrimp, crabs, clams, and whelk. They will occasionally feed on fish such as sculpin and cod. Seals rely on ice for feeding, breeding, and resting. As of 2016 they are of least concern on the IUCN Red List.

Distribution

beardedseal_largemap
This map shows that Bearded seals tend to be found in the Bering, Chukchi, and Beaufort seas in Alaska

Fun Facts

  • Bearded seals live about 25-30 years (maximum)
  • Bearded seals have 4 nipples! (most seal species have 2)
  • The Alaska stock is the only stock of bearded seals in U.S. waters.
  • These seals are part of the subsistence harvest in Alaska
    • The Alaska National Interest Lands Conservation Act is a United Stated federal law that allows this to take place.
    • The Marine Mammals Protection Act usually prohibits harassing, feeding, hunting, capturing, killing, and importation of  of any marine mammal or marine mammal product.

Threats

  1. pollution
  2. climate change
  3. ocean acidification

Note: “There is no evidence of any impact from hunting on Bearded Seal population numbers. For example, reports from Alaska Native subsistence hunters do not give any indication that Bearded Seal numbers have declined (Quakenbush et al. 2011).” – IUCN Red List

Why should we care?

There is no accurate population count at this time, but it is estimated there are about 500,000 worldwide. Bearded seals have played a big role in Alaskan native history. The loss of this species would greatly impact Alaskan culture. Not to mention, have you seen that cute face?

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Bearded seal hauled out on ice – Image from NOAA Fisheries
Definitions
  • IUCN Red List → the International Union for Conservation of Nature’s Red List of Threatened Species (watch this video to learn more)
  • subsistence harvest → hunting, fishing, and gathering of wild resources for food, raw materials, and other traditional uses.
Hydrophilic Hearts

An Affinity for Water

Welcome! I started this blog because I am a lover of the ocean and most bodies of water. There are so many interesting organisms that have mastered living in the water and I wanted to share my love for them. What I post about will range from fishes, marine mammals, microscopic organisms, plants, and so on. Feel free to submit something you would like to learn about.

“There’s nothing wrong with enjoying looking at the surface of the ocean itself, except that when you finally see what goes on underwater,you realize that you’ve been missing the whole point of the ocean. Staying on the surface all the time is like going to the circus and staring at the outside of the tent.”
Dave Barry