Tuesday, December 11, 2018

More About Galapagos Sea Lions


Three things especially struck me about the sea lions:  the dominant male’s aggressive protection of his females and his turf (even against humans, if he feels they’re a threat); the sea lions’ general playfulness; and how much they reminded me of dogs. 

The day after our visit to Fernandina, when we were on the Islet of Sombrero Chino, I observed a male patrolling and protecting his turf and his harem.  He ‘ran’ along the beach on his flippers, barking hostilely at a male he perceived to be a threat.  Not for long, though. 

 
Sea lion examines guide Roberto
From these photos it’s clear the sea lions don’t see us as threats.

Sea lions ignore me
Playmates, maybe….but not threats.

The three pups below had been playing in the sea and came ashore together, still cavorting.  Their antics and their endearing faces are what remind me so much of dogs.  
Playful Pups
Sea lion frolics impress me  more than their aggressive turf protection.  They can be very funny… but not to everyone.

In a previous post, I mentioned the marine iguanas’ diet consists of underwater algae and the iguanas can remain submerged for 15 minutes or longer.  But when they need to surface for air and warmth, timing can be critical.  One of the problems they run into—playful sea lions.

While the iguana is heading up for survival,  high-spirited sea lions frolicking under the water can interfere with that ascent.  The sea lions are only playing…oblivious to the affect this may have on their unwilling playmates.

The dominant male sea lion may examine a human (or any other) visitor on land or under water to be sure there is no threat to him or his harem.  As long as the bull does not feel challenged, he’s unlikely to attack or pursue a human. But the mere appearance of a competitor can provoke a loud barking chase.

The sea lions' diet is fish.  Generally their prey is within a mile or two of the shore.  But if they have to expand their hunting area, they will…and that’s when they run the risk of becoming prey instead of predator.  Deeper waters and distance from shore increase the likelihood of encounters with killer sharks and hungry whales.

You may recall the ‘sea lion greeter’ when we began our trip.  To see a video of a more assertive sea lion on the docks, visit https://www.youtube.com/watch?v=pfcn9RXJ8AU

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