July 16, 2019

The ocean is home to 49 species of dolphins that are broken into smaller groups based on their physical characteristics: oceanic dolphins’ family contain 38 species; the porpoise family has 7 species and then there are 4 other distinct species of dolphins.

As different as each group is from the other, there is one that all dolphins have in common— their unique sense of hearing. You see, dolphins don’t hear things the way we do; they rely on a hearing mechanism called SONAR and echolocation.

Image showing ocean shirt for kids

SONAR and echolocation are a lot more sophisticated than other hearing methods. Dolphins have a wider hearing range than most species that enables them to hear sound frequencies that others can’t process.

Hearing Senses

Dolphins don’t have external ears, but they have small ear openings on the sides of the heads through which they hear sounds. They use these openings to listen to sounds when they’re above water. Their underwater hearing mechanism is slightly more complex.

Dolphins use their lower jawbone to transmit sounds to the middle ear. They use these sounds to communicate amongst themselves and to locate organisms and objects underwater. There’s also some evidence that suggests that dolphins actually “talk” and have managed to assign meaning to certain sounds.

Echolocation

When underwater, dolphins rely on echolocation, the same way whales do. Through echolocation, dolphins can determine the presence of objects and other organisms floating around nearby.

Dolphins create a high-pitched pulsing or clicking sound in their foreheads that convert into sound signals in the water. When the sound waves bounce off objects and organisms in the water, dolphins and whales can determine their location.

As the sound vibration bounces back the dolphins, it generates a pulsing sensation in their lower jaws. Every object or animal in the water generates distinct echoes so dolphins know whether or not it poses any danger to them. Not only can dolphins find out the location of an object/organism in the water, but they can also tell its size, shape and texture!

Echolocation is a far more superior hearing mechanism than what most animals (including humans) use; the sound is transmitted at a speed that is 5 times faster through echolocation than it does in air.

Dolphins rely on echolocation to communicate with one another, determine the position of possible predators and locate food.

SONAR

SONAR works similarly to echolocation; it’s what dolphins use in murky waters. Dolphins create two types of sounds: high-pitched whistles or a rattle/clicking noise. When it’s dark and murky underwater, dolphins use rattling/clicking sounds that are better known as SONAR.

Like many other aquatic mammals, dolphins too are under threat from toxic contamination, habitat degradation and climate change.

Want to save dolphins and other marine life creatures? Help us generate awareness on all the threats looming over marine life. Join us in our cause! Help us get the word around by shopping for high quality ocean-themed apparel, accessories and home décor at our online store.

 


Leave a comment

Comments will be approved before showing up.


Also in The Ocean Vibe - Blog

Image showing need for ocean themed bedding sets
Did you Know Jellyfish Can Do More Than Drift?

July 19, 2019

At first glance, jellyfish look like empty bags floating through the ocean. Their clear, gelatinous bodies have no heart or brain; to most people, the only thing worth noting about jellyfish is their ability to sting you.

Read More
Image showing buy sea life bedding sets
All You Need To Know About Marine Snow

July 18, 2019

The oceans, in all their glory, are constantly contributing to making our lives better. Express your love for the sea and its creatures by contributing to a cause that donates 10% of its net income to the Ocean Conservancy and Sea Turtles Preservation Association. Shop from an array of ocean themed shirts for kids, casual footwear for ladies, or go a step further and deck out your car with our sea turtle seat covers. Give the ocean the attention it deserves by doing your part!

Read More
Image showing snuggle blanket for adults
Sea Turtles and Plastic: An Unfortunate Affair

July 17, 2019

Do your part as a responsible citizen and help spread the word by supporting our cause! Shop for ocean themed apparel, accessories and home décor at our online store; help us bring light to marine life preservation, oceanic pollution and more. Contact us for more information.

Read More