There is a species of starfish called the crown of thorns. this species is responsible for killing coral reefs around the world. if you want to find out how these species have become so abundant around the world, who would you call?

I think the best person to call and ask for questions about this would be a marine biologist. This person is someone who studies all types of sea creatures, and can choose to specialize in studying large ocean animals, all the way down to microscopic organisms. Hope this answers the question.