A German tourist lost her arm to a shark, marking the eighth Hawaii attack over the past year.
The woman was with two friends before the attack which severed her arm right below the shoulder, the Honolulu star reported via NBC.
The woman was rushed to Maui Memorial Hospital and was in critical condition when she arrived.
"We heard screaming from the water and it was this unbelievable scream like I've never heard before," Andree Conley-Kapoi, who said she witnessed the attack, told HawaiiNewsNow via NBC. "I stopped working and I said the only time anybody would scream like that would be if they were being attacked by a shark."
There has only been one shark-related death in Hawaii over the past 20 years, but this was the fifth on the Mai coast and the eight in the state this year, the Associated Press via NBC reported.
Another woman was recently attacked off the Mai coast when she was visiting from California.
Evonne Cashman, the shark attack victim, suffered a 15-inch bite mark over her spine and neck, KHON 2 News reported.
"I must have had my hands up in front of my face. I think my head was above water, if I remember correctly. I don't know because it happened so fast. I didn't see him coming. I didn't see him leave. He just came and hit me hard and bit me hard and I just took off to the shore as fast as I could," Cashman said.
Only three days earlier Kiowa Gatewood was bit on the leg by what she believed was a tiger shark, NBC reported.
"I was sitting on my board, when all of a sudden I saw this shark come out of the water and grab my leg," Gatewood said. "From there, I had this instinct to like, hit it with my left hand and then it let go and turned around and swam away."