For this project, I procedurally modeled a jellyfish :)
The bell and the arms were made using the following tutorials: Jellyfish Bell Setup Video and Jellyfish Arms Setup Video.
The veins were created using the shortest path node in Houdini.
The tentacles were made using this tutorial: This video.
The organs were created by using a line and bending it to create a curved shape. I also used a ramp to adjust the extrusion at different points to create bumps.
The colors were added using the standard shader and an environmental light that gave everything a nice blue hue.
Used this HDRI as an environment light: https://www.freepik.com/free-photo/lovely-blue-paint-water_2254487.htm#query=hdri%20underwater&position=26&from_view=keyword&track=ais_hybrid&uuid=245ab81e-fd66-4cd9-92e2-9aed113ba723