2001-Wed Dec 07 19:12:16 MST 2016
Vetstreet. All rights reserved.
Vetstreet does not provide medical advice, diagnosis, or treatment. See Additional Information ›
April 14 is Dolphin Appreciation Day, which is as good a time as any to learn a little something interesting about these popular mammals.
Michael Hunt, the Georgia Aquarium’s director of animal training, sees the survival of the dolphin as a sign of the health of our open waters. “As a species, dolphins are a great barometer for what's going on in our oceans," Hunt says. "When you look at the number of ill and dying dolphins that have washed ashore this year alone, it drives home the point that our seas aren't in very good shape."
Lisa Takaki, senior director of marine mammals at Chicago's Shedd Aquarium, agrees. “We want to keep these species on the planet and make sure they’re here for future generations," she says.
How can we do that? Hunt suggests that "the best way to help dolphins is to learn as much as you can about the challenges they face and better appreciate and protect their habitat.”
To get you started appreciating — and supporting — dolphins, we've collected seven little-known facts about these fascinating creatures.
1. Dolphins are born with a mustache. Dolphins may look smooth, but they do have hair at one point in their lives. “When first born, they have little remnants of hair almost like a little mustache right along the top of where our upper lip would be,” Takaki says. “Because of swimming, it falls out pretty quickly.”
2. Dolphins lack vocal cords. According to Hunt, it’s inaccurate when dolphins are portrayed as making noises with their mouths because they do not have vocal cords. “All of the above-water vocalizations made by dolphins are generated exclusively via the blowhole,” he says.
3. Dolphins have “names.” Those vocalizations you hear might not just be general communication and echolocation, either. Takaki says dolphins identify themselves with a distinct, signature whistle. Each dolphin has a signature whistle that acts like a name.
4. Dolphins travel with different species. According to Takaki, some dolphins will travel to other “neighborhoods,” which often results in mixed-species pods. “The Pacific white-sided dolphin is known as being one of those species seen in the company of other dolphins and whales," she says. "It doesn’t surprise me because dolphins are friendly, gregarious and curious."
5. Dolphins don’t travel as families. When dolphins do travel together, they don’t travel as whole families. Takaki says that males break away and travel with each other while the females stick together.
6. Dolphins may be essentially colorblind. What exactly dolphins see when it comes to colors is unclear to researchers. “Physiological studies suggest that they cannot see colors in the green spectrum based on the absence of certain cones in their eyes,” Hunt explains. “On the other hand, behavioral studies indicate that dolphins might have color vision, but scientists debate whether the animal is responding to brightness versus color.”
7. Dolphins don’t have a sense of smell. According to Hunt, dolphins also can’t smell. Their brain lacks an olfactory system that would give them this ability.
Learn more about dolphins on the websites for the Shedd Aquarium and Georgia Aquarium.
More on Vetstreet.com:
Like this article? Have a point of view to share? Let us know!
Take our breed quiz to find your next pet.
Get all the best pet news and information sent right to your inbox!
Thank you for subscribing!
We combed through 505,270 kitten
names to determine the hottest male
and female monikers of the year.
We scoured our database of 1.1 million
dogs to find out which male and female
monikers reigned supreme this past…
Christmas trees, fatty foods and other
seasonal items may bring cheer to your
home, but they'll cause harm to your…
Dr. Sarah Wooten takes a closer look at
this curious sleeping habit and what it has
to do with canines’ ancestry.
The Kromfohrlander is said to be
descended from a mixed-breed dog
who was a mascot for American troops.
Check out our collection of more than 250 videos about pet training, animal behavior, dog and cat breeds and more.
Wonder which dog or cat best fits your lifestyle? Our new tool will narrow down more than 300 breeds for you.
If the video doesn't start playing momentarily,
please install the latest version of Flash.
Thank you for subscribing.