This is unusual, 3 separate suba diving deaths in today's news:

Scuba diver drowns off Tasmania

http://news.smh.com.au/scuba-diver-drowns-off-tasmania/20071231-1jne.html

A 38-year-old diver who drowned off the coast of south-east Tasmania may have been caught in a kelp bed.

The Brighton man got into difficulty while diving off Slopen Island, near Nubeena, southeast of Hobart at about midday (AEDT) Monday, police said.

It is believed the man got caught in kelp.

"The deceased male was participating in 'hooker diving' at the time of the incident, involving a compressor on the surface and a hose," Tasmania Police said.

Two divers die in New Zealand incidents

http://news.smh.com.au/two-divers-die-in-new-zealand-incidents/20080101-1jq5.html

A second diver has died in the Bay of Plenty in the north-east of New Zealand's North Island since Christmas, Te Kaha police say.

A 49-year-old Opotiki man had been diving with family off the coast below the Cape Runaway lighthouse. He was discovered floating and unconscious shortly after beginning his dive.

Family members attempted to resuscitate him, and further medical help was given at the Waihau Bay boat ramp, but he never regained consciousness.

No further details would be available until next of kin have been notified, police said.

A 29-year-old Waikato woman went missing last Friday while diving with three others for scallops off Motiti Island, about 30km east of Mt Maunganui.

Catherine Elizabeth Kells's body was found two days later, Tauranga police said.

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Scuba diver dies on south coast

http://news.smh.com.au/scuba-diver-dies-on-south-coast/20080120-1mzc.html

A scuba diver died after he was pulled from the water on the NSW south coast.

Police say the 70-year-old was diving at Bushrangers Bay, near Shell Harbour, with another diver about 11am (AEDT) on Saturday.