Ask a Question
or
Create a Poll
  1. Home /
  2. Questions /
  3. Science
  4. / Biology
  5. / Animals & Wildlife
  6. / General Animals & Wildlife

by headscratcher1 on September 15th, 2006

headscratcher1

Question

Help answer this question below.

Do any animals or fish have a "built-in" light source so they can see in the dark?

Share:
Other

Answers. Showing one answer.

  • by bbumgarner on September 16th, 2006

    bbumgarner

    WHile it is true that a number of the creatures in the deep deep sea have built-in light sources (Hungry Guy's answer is correct), these light sources are typically not used for general vision purposes. 

    Like a firefly, the lights are often used to find potential mates.   Alternativey, the lights are often used for hunting.   Many small creatures are attracted to lights as it is not uncommong that really small things in the ocean light up, too (plankton, for example).   As such, a larger predator will have small lights that are used to lure in prey.

    At that depth, light simply does not travel far.   Even at 100 feet, a typical diver's light that is blinding on the surface barely illuminates the reef a couple of yards in front of you.

    Comments
    • Like
    • Report

    No comments. Post one | Permalink

Want to attach an image to your answer? Click here.

Did this answer your question? If not, then ask a new question or create a poll.

More Questions. Additional questions in this category.

You're reading Do any animals or fish have a "built-in" light source so they can see in the dark?

Follow us on Facebook!

Related Ads

Related Questions

Professionally Researched

Answerbag

a Demand Media company