Visit the SHARK LAGOON 1. Observe these sharks as they swim by. How can you tell which are males and which are females? You can't really tell just by looking at them from what I can see. 2. Observe the sand tiger shark, which is in the same order as the white shark, i.e., a mackerel shark. How many gill slits does it have? It looked like it had 5 gill slits. VISIT the GIANT PACIFIC OCTOPUS EXHBIT 1. Observe the octopus for a few minutes and describe its behavior. What are two features that put the octopus in the phylum Mollusca? It's walking along the glass while flailing it's tentacles at a slow pace. They camouflage themselves really well and have ink glands