Videographer and California resident Domenic Biagini captured drone footage of a shark hunting a harbor seal off La Jolla while on a San Diego Whale Watch vessel on June 22.San Diego Whale Watch identified the predator as a Marko shark and estimated it was around 10-feet long. The seal managed to slip away but sustained some injuries from the attack, according to the tour agency. Credit: Domenic Biagini via Storyful