Muriwai is on the east coast of North Island, New Zealand. It is also home of a large colony of gannets.
Gannets are also found along the Gulf of Mexico. I have no clue if there is a direct correlation, but, the chance is there is a strong attraction to birds that dive into the water to feed by sharks. It would be an interesting study for a biologist concerned about shark survival. It would be a worthwhile study for separate studies to be conducted by non-communicating scientists in the USA and New Zealand. Their work could be published at the same time with the same investigative methodology. It would be interesting. The gannets might have the same creature habits in the same cycle regardless of the hemisphere.
Video of diving gannets (click here)