If you'd like to extend your child's learning after a visit to the aquarium, or just want a fun art project to work on, here is one of my favorites. It can be done with kids of all ages (a two year-old's work will be less representational than a 10 year-old's, but just as beautiful!):
Materials: paper, crayons, water color paint
Step 1: Ask your kids to draw their favorite underwater animal using crayons on paper.
Step 2: Where does that animal like to be? Near rocks? Kelp? Coral? Have your kids draw a background for the animal. Note: they don't need to draw the water, that will be done with the paint (unless of course they really want to draw the water with crayons. Remember: it's their art!)
Step 3: Ask your kids what color the water is...it may look blue or green or gray or brown to them. It may even look pink! There is no right answer here. Have them paint over the drawing with water color paint.
Step 4: Look at that masterpiece! Let it dry and hang it somewhere your kids can see so they can revisit it and recall their learning.