SLAP Presents: Eric Martinac in "Natural Selection" Buy the full length video at www.nattyselect.net! Natural Selection is a skate video from Boston and Lowell MA. Featuring Dave Bachinsky , Dan Murphy , John Desimas , Eric Martinac , Steven Catizone , Pedro Deoliveira , Sean Hernandez , Jimmy Lake , Serges Murphy and Jay Clement. Video by Elliot Vecchia.