I made these instructions for students to shade and locate features of the ocean floor. I included the different plate boundaries, seamounts, guyots, plates, mid-ocean ridges, abyssal plain, etc. You can purchase these large seafloor maps on Fisher or Wards and they come in a pack of 100 for $18-$25. The students did MUCH better on their Marine Geology test this year and the only thing I really did differently was this activity. The second page is referencing a "Mid-Ocean Ridge" worksheet that you can also buy on Wards for $18 for a pack of 50.