Oh the Hue-Manatee! This pattern will also provide the basic body of a walrus (just add tusks!) and a fish (sew the tail closed so it stands vertically), you can make it bigger or smaller by adjusting the weight of yarn used and adding rounds, it really is up to you!

Written in UK terms. (UK double crochet = US single crochet)

Things you will need…
DK yarn in orange, yellow, green, light blue, dark blue, purple, hot pink and light pink. Alternatively you could use a variegated yarn in rainbow colours.
4mm (G) crochet hook.
A stitch marker.
Polyfill or other stuffing.
Darning needle
5mm black beads/safety eyes or a scrap of black yarn for the eyes.
Needle and black thread.

Skills.
Magic Ring.
Double Crochet (US single crochet) stitch.
Joining Colours
Increasing and decreasing.