are of course projects going on across the globe to protect the coral we already have stopped next kwekxt kwek went to see one such project at the most banal —— famous coral reef in the world. the great barrier reef, australia, wonder of the world. earth's largest living thing, sprawling 1600 miles. but this paradise could soon be lost at the hands of a very surprising vandal. crown of thorns starfish eat coral, and although they are found he naturally, recently too many have been pouring in at once due to major weather events and ocean pollution. you would think a starfish would be a cute, gorgeous thing you would see on the great barrier reef. the crown of thorns starfish, not so much. they are spiky, ugly, they can have up they are spiky, ugly, they can have up to 20 or 30 arms. the biggest issue with crown of thorns starfish issue with crown of thorns starfish is that they can eat up to one metre of coral per day. when they are in plague proportions they can absolutely desolate a reef. to the rescue, the range of bots. —— ranger bots. these underwater drones autonomously scoured the

. >> we are investigating to see where they were injured, kwek people, looking for surveillance footage to help us. >> reporter: the bernal dwelling apartments have been the scene of many shootings over the years. police are hoping surveillance cameras will help them track down whoever is responsible for the most recent shooting. in san francisco, kate larson abc7 news. >> in a separate incident a woman was fatally shot in san francisco's excelsior district this morning. it happened at 11:00 a.m. on mission street near santa rosa avenue. the victim was rushed to the hospital where she died three hours later. no arrests have been made so far. >> a warning about this video we are about to show you. it shows a troubling attack on a person who is lying on the sidewalk in san francisco's tenderloin neighborhood. the attacker walks up to him and then there kicks the victim several times as you see that attacker was wearing a suit, black beanie and was holding a briefcase. happened in late may on level enworth street between golden gate and mcallister street. police are asking for your help to