Glowing red/pink anemone.

For years, I have come across anemones which have such vibrant, red/pink tentacles. They are rare to see and every time I take a picture of them, the color looks drab. I try all different settings, even without strobe but it always looks so dull yet to the naked eye, it glows. What am I doing wrong? Below is an example of an unprocessed picture of an anemone that to the naked eye, was so vibrant.