Not seen but felt.

While surfing at 14 street Santa Cruz I was nailed by something I never saw. Initially I felt nothing but after rinsing off in fresh water later that night I notice my neck starting to blister up. Its been a week and my neck is still on fire. From my research I'm sure I either rubbed against a Chrysaora fuscescens (Sea Nettle) or the baby ones known sometimes as sea lice.