We came across this great fascination! Pink Dolphins! Take a peek and click on the link to read more facts. Remember to click the back button to return back to our awesome Dill Site for more OMG’s.
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Amazon river dolphins, also known as Inia geoffrensis or “botos,” are pink for a variety of reasons related to their biology and environment:
- Capillary Density and Transparency: The pink color comes from the thinness of their skin and the presence of blood vessels close to the surface. This makes their capillary blood supply more visible, particularly during physical exertion or heightened activity, similar to how humans might blush.
- Aging and Scarring: Some dolphins are born gray and turn pink as they age. Scars from rough play, fights, or encounters with predators can also contribute to a pinker appearance. Older males tend to be the pinkest, possibly because of more frequent fights for dominance or mates.
- Environmental Factors: The murky, sediment-rich waters of the Amazon may also play a role. The pigmentation could help the dolphins blend in with their surroundings, especially in shallow waters.
- Heat Regulation: The pink coloration might help regulate body temperature by allowing more blood to flow near the surface of their skin when it’s hot.
Amazon river dolphins’ unique pink hue has made them a standout feature of the river systems they inhabit, and their color often varies from pale pink to vibrant shades depending on the individual and context.
