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The Breeze Magazine of the Lowcountry, JULY 2018

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ENVIRONMENT<br />

TIPS ON NAVIGATING<br />

DOLPHIN BEHAVIOR<br />

Amber Kuehn, Marine Biologist<br />

Owner <strong>of</strong> Spartina Marine Education Charters<br />

I thought every 12 year old had <strong>the</strong> keys to a motor boat,<br />

and threw a cast net to catch a mullet to feed <strong>the</strong>ir pet<br />

dolphin named Dolly. <strong>The</strong>re are things that you observe<br />

as an adult that you had seen as a child, but never<br />

thought anything <strong>of</strong> it…<br />

All <strong>of</strong> <strong>the</strong> cetaceans residing in Beaufort County are<br />

Atlantic Bottlenose Dolphins (Tursiops, truncatus)<br />

When dolphins approach boats for food<br />

It was always exciting to feed Dolly <strong>the</strong> fish, which she<br />

would only swallow head first. Dolphin swallow <strong>the</strong>ir<br />

food whole, so it had to be just <strong>the</strong> right size and it went<br />

down smooth head first, as fish are streamlined in <strong>the</strong><br />

forward direction. However, IT IS A FEDERAL OFFENSE<br />

TO FEED MARINE MAMMALS AFTER 1992. <strong>The</strong> federal<br />

government amended <strong>the</strong> Marine Mammal Protection<br />

Act <strong>of</strong> 1972 to say that no food <strong>of</strong> any sort shall be fed to<br />

any marine mammal in <strong>the</strong> United States. This includes<br />

polar bears, sea otters, manatees, sea lions, seals,<br />

whales, dolphins, etc.<br />

Due to <strong>the</strong> fact that dolphins do not taste <strong>the</strong>ir food, <strong>the</strong>y<br />

will eat anything that will fill <strong>the</strong>ir bellies. <strong>The</strong>y are lazy,<br />

and would prefer to open <strong>the</strong>ir mouths to beg from boats<br />

ra<strong>the</strong>r than catching <strong>the</strong>ir own food. <strong>The</strong>re is obviously<br />

less nutrition in a Twinkie than a fish, but <strong>the</strong>rein lies a<br />

larger issue, no fresh water in a Twinkie (A Twinkie is an<br />

American snack cake, marketed as a “Golden Sponge<br />

Cake with Creamy Filling”). A dolphin is a mammal and<br />

cannot drink salt water. <strong>The</strong>y stay hydrated by eating<br />

fish. A fish can drink salt water all day long and excrete<br />

<strong>the</strong> salt in its urine and through its gills; a fish is full <strong>of</strong><br />

fresh water. <strong>The</strong> raw fish at <strong>the</strong> sushi bar is not salty until<br />

you add <strong>the</strong> soy sauce. At Hudson’s Seafood, you don’t<br />

request your fish to be prepared without any salt, butter,<br />

seasonings…Just fish plus heat will be very bland. Also,<br />

it is best that dolphins do not hover around boats with<br />

spinning blades.<br />

When dolphins blow several times at once<br />

<strong>The</strong>y are so graceful and amazing to watch as <strong>the</strong>y glide<br />

through <strong>the</strong> May River. When <strong>the</strong>y break <strong>the</strong> surface<br />

<strong>of</strong> <strong>the</strong> water to brea<strong>the</strong>, <strong>the</strong>y exhale (<strong>the</strong> blow that<br />

you hear). <strong>The</strong>ir name should be <strong>the</strong> Atlantic Bottle<br />

Mou<strong>the</strong>d Dolphin, because <strong>the</strong>ir<br />

mouth is <strong>the</strong> rostrum or projection<br />

on <strong>the</strong> front <strong>of</strong> <strong>the</strong>ir face, and <strong>the</strong><br />

nose is actually a blowhole on<br />

<strong>the</strong> top <strong>of</strong> <strong>the</strong>ir head! When your<br />

nose is a slight dent on <strong>the</strong> top <strong>of</strong><br />

your head with two muscles called<br />

monkey lips that open and close it<br />

to brea<strong>the</strong>, what is still in <strong>the</strong> dent<br />

when <strong>the</strong> dolphin comes up for<br />

air? Water! So will it inhale first?<br />

Or exhale first. If you answered<br />

exhale first, you are correct. <strong>The</strong><br />

exhale pushes that water out<br />

12<br />

bluffton.com #blufftoncom

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