A large underwater earthquake shook Hawaii Island, collapsing one house at Kalapana, causing landslides north of Hilo and generating a small tidal wave, according to authorities and residents. No injuries were reported from the quake, the Pacific Tsunami Warning Center said. The earthquake, with a magnitude of 6.5, was centered eight miles off the island's southeastern coast, near an underwater volcano named Loihi, said Bruce Turner, a geophysicist at the warning center in Honolulu. The temblor generated a tsunami wave that was 22.8 inches high at Konuapo, 8.4 inches at Kapoho and 5.6 at Hilo, Turner said. No damage was reported in the tsunami, authorities said.