A group of scientists said they discovered three species of fish hiding in the depths of the Pacific Ocean.

According to researchers at Newcastle University, the three types of fish, temporarily named Atacama, were found in the Atacama Trench, a trench 8,000 meters deep off the west coast of South America. .

The mollusc species are small, translucent and without scales. Their bodies are built to cope with the extreme pressures encountered in the deepest parts of the ocean, the scientists said.

Thomas Linley, of Newcastle University, said the hardest bones in fish are those in the inner ear to help maintain balance and teeth.

"Without the extreme pressure and cold needed to support their bodies, they are extremely fragile and melt quickly when they are brought to the surface," Linley said in a statement.

The researchers also captured images of munnopsides, long-legged crustaceans the size of an adult hand. The creatures can swim backwards and backwards, have long legs like spiders and paddles to help them swim. Scientists have said that creatures use a return movement to the transition between swimming and walking.

To catch the fish and collect videos of what is happening in the deepest parts of the ocean, the researchers used landers capable of reaching depths of up to 11,000 meters equipped of HD cameras.

The landing gear is dropped to the sea and can take up to four hours for a trap to sink to the bottom. The researchers then release an acoustic signal to release weights that allow the landing gear to rise to the surface.

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