这幅作品主要表现了海洋垃圾增多，鲨鱼的栖息环境遭遇了破坏，从鲨鱼满嘴卡住的垃圾，表现出它的牙疼，反衬出它生活环境遭到了严重破坏。

The illustration shows that the habitant environment of sharks are being broken due to ocean pollution. You can feel the pain when looking at all trash stuck in the teeth so you can see how their living environment is ruined.