Knit your own jellyfish with this easy-to-follow pattern! 
 
Comes in two sizes: Regular (not suitable for children under 3) and Baby (this size is similar to the octopus and jellyfish toys given to comfort premature babies).
 
Skill level = Intermediate
 
The pattern includes:
List of materials, list of skills (with links to tutorials), detailed write-up of every step, images and notes to help with reading.
 
Skills required:
Knit stitch
Knitting in the round
Increasing stitches (Knit front back)
Decreasing stitches (K2tog, S1k1 psso)
I-cord
Casting off
 
This pattern uses a 4-ply wool. Pictured wool is "Jellyfish" by The Wool Kitchen.