Meet Our Intelligent Mammals: California Sea Lion

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Many people mistakenly believe that Sea lions and Seals are the same marine animals. But they are definitely different. Sea lions and seals can be determined physically, unlike other animals, which we call morphospecies. However need more information to easily differentiate between them. In this article, we are going to reveal some interesting facts about sea lions to help you differentiate them. Here at Marine Safari Bali, we introduce you to our California Sea Lions so that you can see them swim gracefully in their habitat. You can also discover their behavior and fun facts of California sea lions with us at Marine Safari Bali.

General Description of California Sea Lions

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Figure 1. Our Male Sea Lion named Poto

California Sea Lions (Zalophus californianus) are coastal eared seals native to the eastern North Pacific Ocean, ranging from southeast Alaska to central Mexico, including the Gulf of California. They primarily breed on offshore islands from the Channel Islands in Southern California to Mexico. California sea lions are sexually dimorphic. Sexually dimorphic refers to the physical, behavioral, or physiological differences between males and females of the same species, excluding their reproductive organs. Males are larger than females, have a thicker neck, and a protruding sagittal crest. California sea lions feed on a variety of fish and squid. California sea lions are marine mammals that nurse their pups in between foraging trips. While Seals have no external ear flap and only a small hole on the side of their heads. 

Scientific Classification

  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Carnivora
  • Family: Otariidae
  • Genus: ZalophusSpecies: Zalophus californianus

Echoes of Intelligence

California Sea lions are widely considered one of the most cognitively advanced marine mammals. Their intelligence is characterized by a high capacity for logic, long-term memory, and social learning. California Sea Lions are highly social and vocal. They use barking as a primary form of communication, particularly for establishing and defending breeding territories. They spend much more time on land and get into the water only when they are hunting for food. You may not believe that they can also bark underwater. They can produce barks both above and below the surface. On land, their bark is a loud, rapid “honking” sound produced by forceful exhalations of air through the larynx. Every sea lion has a distinct vocal signature—much like a human fingerprint. A mother can identify the specific “pup-attraction call” of her baby from a great distance, and the pup can distinguish its mother’s voice from all other females. Beneath the surface, their barks transform into clicks, whinnies, and pulsed growls. These sounds help maintain social contact with the group while hunting or traveling in murky waters with low visibility.

Lifelong Learners

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Figure 2. Hiromi plays with the trainer

California Sea lions have long memories like an Elephant. Once our trainers teach them a lesson, they will remember it. What an incredible accomplishment. They are lifelong learners with an incredible “hard drive” in their brains. Their brains create a 3D mental map of the world using different senses. If they touch an object with their whiskers in the dark, they can recognize it later just by looking at it. Sea lions don’t just mimic behavior; they actually understand it. They are one of the few species on earth capable of “if-then” logic. To a sea lion, this kind of abstract thinking is second nature. This logical “spark” is what makes them so collaborative with their trainers. They aren’t just following a cue, they are participating in a conversation.

Strong Flippers

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Figure 3. Hiromi shows her strong flippers

California sea lions have strong flippers that they can use for hunting and walk on land. They use their massive, wing-like front flippers to “fly” through the water. Sea lions use a powerful downward and backward stroke of their front flippers. California sea lions are the fastest of all pinnipeds, reaching speeds of up to 40 km/h. They can hunt in the depths of the ocean as expert divers, reaching depths of over 270 meters in search of food. The hind flippers rotate forward underneath their body. Allowing them to “walk,” run, and even climb steep, rocky cliffs with ease. 

Shiny Fur

When the sea lions are dry, their skin actually looks tan or light brown and feels slightly fuzzy. When they are wet, they turn dark chocolate or black. Sea lions have a specialized two-layer system to maintain body temperature. Beneath the skin lies a thick layer of fat called blubber. This acts as a biological “thermos,” trapping heat inside the body and serving as an energy reserve. They have a coat of short, coarse guard hairs to protect the skin from wind and UV when they are resting on land. Maybe many of you are wondering what the texture of sea lion skin and fur is? The answer is that their skin and fur are incredibly sleek or smooth. Our trainers always check their fur and skin as part of their daily routine. Fur less slippers will absorb heat from the sun or releasing excess body heat into the air.