People spearfishing in crystal clear water near an ocean wastewater outlet

wastewater outlet spearfishing hunting ocean infrastructure water fishing watersports freediving catch ecofriendly equipment sustainable sustainability reef gold coast jetty sand bypass queensland australia speargun drone high view 4k tropical water snorkeling tropical destination protected species marine biology marine conservation fish recreation wildlife water activity fins ecosystem primary industries spearfish food spear gun kill hold breath dive wetsuit float fisheries apnea reef system