Sketch Tuesday: Something poisonous…

We have missed the last few Sketch Tuesday assignments, but this one fit right in with our Apologia Zoology II Swimming Creatures of the Fifth Day curriculum.  We had learned about rays and skates in the chapter on Sharks and Rays.  These two creatures both have cartilage instead of bones!  The cartilage is lighter, and more flexible.  Rays have a sharp, spine or stinger filled with venom near the tail.  When we visited the Virginia Aquarium a few weeks ago we were able to watch a feeding, and hold our hands down in the tank water to feel the rays’ backs when they swim by.  The … Continue reading Sketch Tuesday: Something poisonous…