Analysis: What are you simulating by mixing the salt and water?
What happens to the golf ball once the salt and water are mixed?
What are you simulating with the tap water?
What happens to the golf ball when the tap water is added to the salt water?
An estuary is a region where salt water and fresh water meet. When the food coloring is added, this “region” is highlighted. What special qualities would the aquatic life in an estuary need to possess?
Which fish is camouflaged in the shoe box? Why are you unable to see this fish?
What happened when you looked at the fish that was not camouflaged?
Bioluminescence is light given off by some creatures of the deep. The hatchetfish is an example of a fish that has photophores (small specialized light organs). These photophores act as camouflage in water depths that has some sunlight. It is necessary for the black silhouette of the hatchetfish to blend into the background of scattered light. How does this activity simulate this idea?
Animals of the dark ocean: http://www.pbs.org/wgbh/nova/abyss/life/bestiary.html
Information on bioluminescence: http://www.lifesci.ucsb.edu/~biolum/