"What is this?"
I don't know - you tell me. As I said, I'm no expert; however, it does bear a remarkable resemblance to the waterborne version of one of those little cars in the circus from which emerge fifteen or twenty clowns all shooting seltzer bottles at one another.
Well, I wondered why you inserted your comment when you are no expert!
We tend to laugh at stuff like this... until they start exacting casualties.
For those who sport fish the Sea of Oman I would suggest for trolling use an ABU GARCIA 5000 with at least 20 pound test line and a deep diving white with black spots BOMBER bait.
You might be lucky enough to get a strike from one of these aquatic freaks and if so play it slowly, boat it, take picture and throw back and try again you might get something worthwhile on your next cast!
One thing I overlooked, be sure to have your reel brake set properly so as not to break you line while in the retreaving mode, after all they are somewhat cumbersome.
I wish you good success and have fun.