A tiger shark bit the arm of a Kansas man who was snorkeling in Hawaii recently.

Authorities believe a 10- to 12-foot tiger shark at Hapuna Beach attacked the man at around noon on Wednesday, and the 58-year-old was sent to North Hawaii Community Hospital and then to The Queen’s Medical Center on Oahu, where he was in stable condition, according to West Hawaii Today.

Authorities closed beaches from Waialea to Mauna Kea and tracked the shark, which cruised near the surf line about an hour after the attack occurred. A helicopter from the Hawaii County Fire Department tracked the shark, and authorities confirmed that they saw stripes on it.

The man was one of many snorkelers who were in the water just 20 yards from shore when the shark bit him, and bystanders helped get the man out of the water and to safety. The man was there with his family.

A lifeguard reported that he noticed commotion in the water and responded, although they did not know what happened at first, according to the report.

Lifeguards put a tourniquet over the bitten arm to prevent blood loss as they waited for an ambulance to arrive. There were deep lacerations to his forearm, as well as to his left thigh.

Another bystander had spotted the shark earlier while body-surfing earlier about 30 feet away, saying that he could “see him in the face of the wave,” he said as quoted in the report.

The beaches will remain closed until today at around noon local time, and a helicopter will sweep the beaches shortly beforehand to make sure it is clear of sharks.

Shark attacks are a relatively rare phenomenon, but the tiger shark is responsible for a large percentage of the ones that do happen, particularly the fatal attacks. It is regarded as one of the most dangerous species of sharks on the planet, not just because of its killing power but because of the fact that it likes to swim in shallow reefs, canals, and harbors, often bringing it in contact with humans. Only the great white shark has more recorded attacks on humans than the tiger shark. Even so, only three to four attacks happen in Hawaii each year, and are mostly not fatal.