Stop carrying the weight of the world on your shoulders.
别太操心了,没有你地球照样转。 (carry the weight of the world on one’s shoulders:自以为重任在肩。)
It is possible that upon such an occasion a battle ensued, with the sharks being driven away or killed.
双方可能随之发生搏斗,搏斗结果是海豚赶走或咬死鲨鱼。