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Sandbar sharks swim in Haleiwa, Hawaii, Feb. 16, 2015. Reuters

A combination of better conservation and more humans in the water than ever before means shark sightings are up — and with them, shark attacks. Reports of great whites, bull sharks and other unidentified sharks have popped everywhere from Florida to South Africa to Australia.

The comprehensive timeline below shows when and where the shark attacks have taken place so far this year.

Jan. 21: A scuba diver was mauled by a bull shark while diving near the Great Barrier Reef in North Queensland, Australia. The 55-year-old man suffered injuries to his hand, chest and stomach after the animal attacked him from behind.

Feb. 21: A 26-year-old man was killed by a shark on Reunion Island in the Indian Ocean. Alexandre Naussance was reportedly bodyboarding with friends on the northwest coast of the island when the unidentified shark bit him on the thigh, fatally severing his femoral artery.

Read: Shark Attacks Mother Of Three, Bites Off Arm While Snorkeling In Bahamas

Mar. 27: A surfer was bitten by a shark about 40 yards from shore on New Smyrna Beach, Florida. Authorities said the unidentified shark may have confused the 55-year-old man with prey in a classic case of mistaken identity.

Apr. 2: A teenage girl on vacation was bitten by an unidentified shark in Destin, Florida. Caitlyn Taylor, 17, said she was swimming when the shark grabbed her by the legs. Taylor was able to escape by punching the shark, though it managed to bite her leg before letting her go.

Jun. 4: An eight-foot shark attacked a man spearfishing off the coast of Key West, Florida. Parker Simpson, 23, was in about 50 feet of water when what appeared to be a reef shark appeared and took a chunk out of his left leg before swimming away.

Jun. 6: A mother of three on a family vacation was attacked by a shark while snorkeling in a shallow reef on Athol Island, Bahamas. Tiffany Johnson had to have her right arm amputated after the shark latched onto it and wouldn't let go. Johnson said she struggled with the animal for at least a few minutes before she was able to escape to a nearby boat.

Jun. 11: A surfer was bitten by a shark in Ponce Inlet, near Daytona Beach, Florida. Bryan Brock, 19, said he was in waist-deep water when the unidentified shark snuck up on him. Brock was getting back on his board when a wave knocked him over and the shark locked its jaws onto his foot.

Jun. 18: A 5-foot-long bull shark attacked a boogie boarder on a family vacation in Hilton Head, South Carolina. Fourteen-year-old Reagan Readnour told local reporters she felt something tug on her leg before realizing she was bitten twice.

Jun. 29: A man attempting to help a fisherman bring a shark back to shore was bitten by that very shark near Johnnie Mercer's Pier on Wrightsville Beach, North Carolina. The tiger shark whipped around while the man was pulling it in and bit him on the arm.

Jul. 7: A 13-year-old girl escaped a great white shark after it grabbed her surfboard and pulled her below the water in Nahoon Reef, South Africa. Zoe Steyn was waiting for a wave when the 10-foot-long shark knocked her over and latched onto her surfboard. Steyn was able to paddle back to shore safely.

Jul. 9: A man was bitten by a bull shark at Haulover Beach, Florida. In what may have been the first recorded shark attack at a nude beach, the man was bitten by the shark while he was getting out of the water. A lifeguard was attempting to chase the shark away after spotting it, which may have provoked the animal, authorities said.

Read: Video Shows Sharks Surprising Tourists In Shallow Water At Florida Beach

Jul. 11: A great white shark went after a kayaker in Santa Cruz, California. The shark destroyed Steve Lawson's kayak, leaving a 12-inch bite mark on the boat and tossing him into the water with the shark in the ensuing tussle. Lawson was quickly rescued and did not sustain any injuries.

Jul. 20: A great white shark attacked a kayaker off the coast of Santa Barbara, California. Brett Jackson told local news outlets the massive shark was grabbed the side of his kayak and took a chunk out of it but narrowly missed biting him. Jackson was able to paddle the slowly sinking kayak to a nearby boat which brought him safely to shore.

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Sandbar sharks swim in Haleiwa, Hawaii, Feb. 16, 2015. Reuters