Answer: Hey There Zachary~ Here to help
When humans hunt animals they tend to favor animals that provide significant resources, like whales and sharks. Now this has a negative effect on species ecosystems, and can also impact the climate, like when whales and other large animals flourish in the ocean they carry a substantial amount of carbon to the sea floor upon dying, and whales like other large marine vertebrates can effectively function as carbon credits. Although whales can cause a negative effect they can also make a positive effect, ever heard of "Bigger is better"? well when it comes to whales bigger is naturally better! Body size is critical to our arguments true but the amount of carbon stored in living whales and the amount exported in sinking carcasses is unbelievabley great! See now i know your thinking "How does a dying whale sound great?" well the shift toward smaller animals can decrease the total amount of biomass by 30% vertebrates because vertebrates can efficiently export carbon from surface waters to the deep seas.
Sincerely Zachary~