From the U/W pictures published by WDC, it's a 2 inches nylon net with small buoys on upper line....it looks like what local commercial fishermen called
Pukat Malas which they deployed by sunset near the reef. It's actually targeting pelagics eg. trevally & sometimes yellow tail fussiliers during March-April & Sep.-Oct period where the fussiliers are much bigger.
Pukat Malas is a lazy way to catch fish where they'll leave it till early morning & haul it up before sunrise....an ideal time without being noticed by anyone.
Judging from the images my guess they did a mistake due to careless or misjudge or complication from bad weather..... and created a shitty mess....we'll they might have lost RM 3-5K for the net....but the reef lost more than that though.
2 years ago a small fishing boat "A" licence was doing this method at our dive site in P.Kerengga ( Redang ) around 6.30pm. Called the Marine Park. 20 mins later a patrol boat arrived & manage to locate & pull the net up....Up till today the owner didnt claim it. I was told that the authorities burnt it!
Sometimes we can't blame the Marine Park Dept. for not taking any action.....fishermen are mobile & you can't have the Marine Park boats
everywhere especially spots like Tokong Laut!

My 2 cents Brickfields opinion.....

PS. well i guess ya'll never seen damages done by the famous
" Pukat Tunda" fishing vessel.....& it's still legal!