On November 30, 2018, 51 whale are in New Zealand is large-scale the death in going aground. Be less than the time of a week, this area has killer whale of 9 147 whale, dwarves to go aground in the coast early or late in die. Below the circumstance that all did not discover change in environment of climate, seawater, incident of such large-scale cetacean and hard and fast death, also make a scientist incomprehensible indeed. Place protects a ministry to express, in the Hansen bay that checks tower Mu archipelago remotely, have at first amount to 90 cetacean proper motion to die aground, subsequently same thing happens one after another. Such frequency send, large-scale cetacean and hard and fast incident is very scarce, the scientist also is searching an account hard. When the staff member arrives, their discovery amounts to 50 whale to die on beach. This department says, the whale that among them one goes aground is living still, ask for as a result of its life style already special and faint, suit to live in sea mile no longer, the staff member decides to carry out euthanasia. The scientist expresses, below current condition, they guess because cetacean voyage is incorrect,the likelihood is boldly, perhaps try to escape sweep past the person that feed, or among them individual suffer from catch a disease, exist possibly also like underwater noise such person is an element.