This potent favorite is hard to find, especially in the United States, but it's popular throughout Canada, where it was born. The biggest selling point is its impressive THC concentration, with top levels easily exceeding 27%. CBD content is almost zero, so Purple Shark shouldn't be used for seizure disorders or other conditions helped by CBD. The strain is a indica dominant hybrid which has a pungent earthy aroma, with tones of blueberry and diesel. The genetics are unknown, but based on its smell and taste it may descend from the original OG Kush and Great White Shark strains.