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5 Fun Facts About Elephant Seals

  1. Adult elephant seals can grow up to 20 feet  (6 meters) in length and weigh 8800 pounds (3991 kgs). That’s almost twice the length & weight of a midsize truck or SUV!
  2. Elephant seals can hold their breath underwater for more than two hours straight.
  3. Elephant seals get their names from their large trunk-like snouts called “proboscis”. These appendages grow only on males and develop during puberty. Males use this appendage during mating to attract females (using a series of snorts & grunts) and as shields to protect themselves during fights with competing males.
  4. Elephant seals produce concentrated, jelly-like urine when there is a lack of drinking water in their surroundings. This concentrated urine helps them conserve water in the body for later use. But the moment they drink water, their urine becomes normal and more liquid-like.
  5. Beachmasters are the alpha adult males in a group of male elephant seals. They are the ones who are the strongest of the lot and who possess the best spots on the beach. It is important for the beachmasters to create a big space on the rookery (the beach selected for breeding) if they wish to attract & control a large harem of females.

 

Bonus

Elephant seals usually mate a few months before winter. This is to ensure that the pups are born during the ideal breeding season when the weather isn’t too cold or too hot. But, females have what is called a “delayed implantation”.

The normal gestation period for elephant seals is 9 months. However, due to the delayed implantation it takes up to 12 months for pups to be born. So, if the weather is not right for the pups’ birth or males haven’t established their territories on the rookery in time, this delayed implantation gives them sufficient time to create or wait for better breeding conditions. This is nature’s way of ensuring greater number of live births during the harsh winter.

 

Video: Epic fights and all the excitement of the breeding season

 

 

 

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A harem of female elephant seals. Each harem can cross a 100 females.
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Just-born seal pup. Sea gulls feed on the placenta and broken umbilical cord of the newborns.
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A seal pup
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Seal pups feeding. The milk is extremely nutritious and helps the pups gain three times their birth weight in blubber, in under a month.

 

-NISHA PRAKASH

 

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5 Fun Facts About Hippos

  1. Hippos are one of the most aggressive animals on the planet and they ‘yawn’ to show their annoyance or aggression towards another animal. Hippos kill an estimated 500 people each year in Africa.  
  2. The ‘red blood’ hippos sweat is actually a natural sunblock and moisturiser which hippos secrete to keep their skin hygienic and healthy.
  3. Hippos rise every 3-5 minutes from underwater to take a breath of air. They do this even when they are asleep, rising automatically and submerging again despite being semi/unconscious.
  4. Hippos are extremely fast and can run at speeds as high as 30 kms/hour. This is faster than the average human!
  5. Hippo calves suckle from their mothers underwater by closing their nostrils and ears.

 

Bonus

Hippos are actually related to whales and porpoises and not other land-based organisms!

 

 

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Hippo mother and calf pairs stay together for 8 years, until the baby enters adulthood.

 

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Hippo mums gently nudge their babies to the surface for the first few days after birth, to help them swim to the top.

 

-NISHA PRAKASH