You will need

crochet hook: 4,0 mm (US 6)
yarn: 100g for 3 jellyfish
others: 35 beads (e.g. yellow) per jellyfish

Abbreviations

sc = single crochet
inc = increase (2 sc into the same stitch)
dec = decrease (sc together 2 stitches)
slst = slip stitch
st(s) = stitch(es)
rnd(s) = round(s)
[…] …x = repeat instructions in brackets as a sequence … times
(…) = number of stitches after the round

Cap

You don’t have to close the rounds with a slst, instead work the cap in a spiral. Start with a magic loop. Leave a long yarn tail at the beginning so that you can hang the jellyfish when it’s finished.

rnd 01: sc 6 into the magic loop (6 sts)
rnd 02: [inc] 6x (12 sts)
rnd 03: [1 sc, inc] 6x (18 sts)
rnd 04: [2 sc, inc] 6x (24 sts)
rnd 05: [3 sc, inc] 6x (30 sts)
rnd 06: [4 sc, inc] 6x (36 sts)
rnd 07: [5 sc, inc] 6x (42 sts)
rnd 08.-11. (= 4 rnds.): sc 42
rnd 12: [dec, 5 sc] 6x (36 sts)
rnd 13: slst 36

Beaded Threads

You have to crochet 3 beaded chains in total. One chain with 15 beads and further two chains holding 10 beads. Before you start to chrochet, you have to thread the corresponding quantity of beads on the yarn.

chain with 10 beads: [1 ch with a bead, 2 ch without a bead] 10x, 8 ch, break the yarn

chain with 15 beads: [1 ch with a bead, 1 ch without a bead] 15x, 12 ch, break yarn

Tentacle

Because of the one-sided increases the tentacle will twist as you go.You have to crochet 2 tentacles in different sizes for a jellyfish.

1st tentacle: Start with a chain out of 31 ch. Insert hook into the 2nd stitch from hook. inc in that stitch and into the next 14 sts along the chain. Repeat the following sequence until the end of the chain: [1 sc, inc in next st]

2nd tentacle: Start with a chain out of 36 ch, then follow the instructions of the first tentacle.

Montage

Sew the beades chains and the tentacles onto the center inside the cap. Drag the remaining thread from the beginning through the tip of jellyfish’s cap towards outside. Now you can your jellyfish on a piece of driftwood, a  mobile or a lamp. If you want to let your jellyfish to float, you can use fishing line instead of yarn to hang the jellyfish.