Ok, so I posted my shark pattern, I might as well put up my notes from the anemones I made a few years ago as well, right? I'd love to see other peoples' versions!
These are just loose notes, not a pattern. The size of the finished creature is entirely up to you, based on how many you cast on, and how tall you knit the base. This pattern is super-easy, if you have basic knitting skills and can use DPNs, you can do this!
My colors were used to mimic the Giant Green Anemone (Anthopleura xanthogrammica) that we see all over our tidepools (since these were designed as presents for my fellow tidepoolologists), but feel free to use any colors that strike your fancy!
These were knit with several leftovers of acrylic worsted/aran yarns. Any yarn will work, and if you don't want to hold yarns doubled, just use bulky weight instead.
The yarns I used were: Caron Wintuk (brown), Lion Brand Wool-Ease worsted (darker green), Lion Brand Jiffy (olive).
For the tentacles, you will need a thin worsted shiny yarn in a contrasting color. I used TLC Cotton Plus.
US 8 (5mm) and US 6 (4mm) double-pointed needles.
Gauge is irrelevant.
Using size 8 needles and one strand brown and one strand olive-green worsted yarns held together, cast on 40 st (or thereabouts). Join in the round, and knit the tube (stockinette) about 4" (or as tall as you want it).
When the stalk is tall enough, wrap one stitch and turn as if to knit a short row. Turn the whole stalk inside out- the reverse stockinette is now the right side (voila- no purling!).
Switch the brown yarn strand for another shade of green, and knit the top of the anemone in stockinette. Use regular decreases, scattered around the row, every other row. Be sure to keep the top flat like a pie crust, rather than curved like a hat crown. A slight bulge is good though, realistic.
Once you have decreased down to about 10 stitches, bind off to form the gullet hole. Anemones have to eat, you know!
Now take your size 6 DPNS and a shiny worsted yarn, and pick up 4 stitches at the top edge (just inside the turning ridge where the stockinette meets the reverse stockinette).
I-cord for about 2.5-3 inches, then decrease 1 stitch to taper the tentacle. Do a few more rows of I-cord and then pull the end of the yarn through the last few stitches and pass it back through the length of the tentacle, tying it to the other end at the base inside the anemone.
Repeat the tentacles all the way around the edge, varying lengths slightly every other tentacle.
Because of the nature of stockinette, this anemone can actually curl in on itself to hide its tentacles, just as real anemones on rocks do when the tide is out!