I drew this with a 2 HB pencil. I always found the nautilus a facilitating species. They are the closest we have to a prehistoric animal in the modern-day. Fun fact, their shells are an example of how logarithmic spiral can show up in nature. There is a certain geometrical reflection to them.
It has been a while since I last posted my art here, but ever since I finally got around to buy myself a proper sketchbook, I have been trying to draw more frequently. I always have it on my person whenever I go or on the table when I see it, as a constant reminder to practice.