亀 ・ かめ ・ kame
Turtle. Designs often depict turtles with a hair-like tail of seaweed. Turtles are a symbol of longevity and good luck.
Minogame (蓑亀・みのがめ) - A turtle design with a hair-like tail of seaweed. The long "tail" adds to the image of old-age/longevity.
See also Kikko.