WAVY.com is reporting that local shark experts “almost certain that it was a shark, maybe even two” that bit surfer Caleb Kauchak, last week.

According to the report, Dr. Jack Music, Professor Emeritus at the Virginia Institute of Marine Science (VIMS) is “certain it was a shark” and is “reasonably sure” that it was either a blacktip or spinner shark involved in the attack. Music has studied sharks for over forty years and has investigated previous attacks in the Virginia Beach area.

Speculation has run rampant in various media reports about what species bit the teen. The most recent WAVY.com report noted that there was speculation that the wounds could have been caused by bluefish, while an earlier WAVY.com report (seen above) mentioned a bull shark or sandbar shark as possible suspects.