Spicules

Spicules are any of various small needle-like anatomical structures occurring in organisms Spicule may also refer to: Spicule (sponge), small skeletal elements of sea sponges Spicule (nematode), reproductive structures found in male nematodes (roundworms) Spicule (solar physics), jets of solar material from the Sun Spicule (glass manufacture), glass flakes formed in the production of glass vials.