The sea floor ?? ???? of Sydney Harbour is littered with household rubbish and plastic, shocking new footage has revealed. 

Filmmaker Dean Cropp, 38, spent 24 hours underwater from Tuesday to collect waste, ?? ???? which will be turned into reusable bottles.

Mr Cropp, who lives on the harbour on a catamaran boat, said he has broken the record for the longest underwater clean-up by one person.  

Shocking footage of Sydney Harbour has shown the sea floor littered with household rubbish

Shocking footage of Sydney Harbour has shown the sea floor littered with household rubbish

Waste like this chocolate wrapper was found in Sydney Harbour

Non disposable coffee cups were found in the sea

Waste like this chocolate wrapper (left) and coffee cup (right) was found in Sydney Harbour

This Coke can is believed to have been from the 1960s or 70s

This Coke can is believed to have been from the 1960s or 70s 

The scuba diver collected rubbish that was over a century old, including a a beer bottle from 1910 and a Coca Cola can from the 1960s or 70s.

He also picked up food packaging, milk containers, a pair of binoculars, beer bottles and cans, hats, plastic red cups and a lot of soft plastics. 

The conservationist said he wanted to show how much single-use plastic ends up in the ocean.

‘Only about 25 per cent of the rubbish actually stays on the surface,’ he said. 

‘So much of the plastic pollution actually sinks down below out of sight, out of mind and it could be here for weeks, months years, even decades.

‘Stop plastic pollution getting into the ocean, [cut] it off at the source.’  

Mr Cropp said he has broken the record for the longest underwater clean-up by one person.

Mr Cropp said he has broken the record for the longest underwater clean-up by one person.

Syringe found in Sydney Harbour

Single use plastic was spotted in the sea

The diver found a filthy syringe (left) and single-use plastics like straws (right) in the ocean

The plastic collected from the sea floor will go into bottles created by sustainable company Zero Co, which turns recycled materials into refillable dispensers for laundry and beauty products.

The company is trying to raise $50,000 for ocean clean-up charities by donating proceeds from the sale of their products. 

8 million tons of plastic is dumped into Australian oceans every year, according to the Australian Marine Conservation Society. 

Sea rubbish can be lethal to marine animals, especially plastic bags, fishing lines and ?? ???? balloon strings.

Animals trapped in the pollution die a slow death by suffocation, drowning, choking or starvation. 

Plastic collected from the sea floor will go into products created by the company Zero Co

 Plastic collected from the sea floor will go into products created by the company Zero Co