Spicules

Spicules are small, jet-like eruptions seen throughout the chromospheric network. They appear as short dark streaks. They last but a few minutes but in the process eject material off of the surface and outward into the hot corona at speeds of 20 to 30 km/s.

http://science.nasa.gov/ssl/pad/solar/images/spicules_color.jpg

User Seti23/ #27 Spicules http://is-root.de/wiki/index.php/User:Spicules