Bay of Plenty region was formed in 1989 after a nationwide review and shakeup of top-level local government in New Zealand. The new region incorporated the former counties of Tauranga, Rotorua, Whakatane and Opotiki. On 5 October 2011, the MV Rena ran aground on the Astrolabe Reef in the bay causing a large oil spill, described as New Zealand's worst ever environmental disaster. The region is subdivided into territorial authorities, which include the Western Bay of Plenty District, Tauranga City, Whakatane District, Kawerau District and Opotiki District, as well as parts of Rotorua District and the town of Rangitaiki in Taupo District. The
Bay of Plenty become a popular attraction as the number of whales such as blue whales and humpback whales migrating into bay waters began to recover. The Bay of Plenty has 227 km of rail network and 4,460 km of roads. The main rail line in the region is the East Coast Main Trunk Railway, which extends from Hamilton in the Waikato region to Kawerau via Tauranga, with the Murupara Branch Railway extending the Kawerau terminus to Murupara, and the Mount Maunganui Branch connecting the Mount Maunganui terminus with the East Coast Main Trunk. Rail networks in the region are used exclusively for