Authorities say he could have violated a fishing ban.
A fisherman in Fujairah is being investigated after catching a 350 kg shark.
Eid Suleiman could be guilty of hunting the pregnant bull shark during an annual five-month fishing ban of the species.
That means he could be facing a six-month suspension to his fishing licence.
The Ministry of Climate Change and Environment says it's leading the investigation in to the incident.

Dubai expands flexible work options with first 'Work From Park' hub
H.H. Sheikh Mohammed launches annual government challenge
UAE to celebrate Flag Day on Tuesday
H.H. Sheikh Mohammed unveils Dubai research campus 'Nad Zabeel'
UAE strongly condemns attack on Qatari gas tanker in Arabian Gulf