Italian architecture giant Giancarlo Zema Design Group has unveiled plans for a semi-submerged resort off the coast of Qatar.

Valued at some $500 million, the Amphibious 1000 will be built in the middle of a marine reserve.

The proposals feature both land and sea developments, including four giant hotels with underwater rooms that resemble super-yachts.

There will also be 80 “jellyfish” self-contained floating suites, with each having four floors and an underwater “aquarium lounge”.

Giancarlo Zema Design Group has developed the designs on behalf of Seaquest Marine Technology.

A central public welcome area, featuring water-based exhibition galleries and an interactive gallery. will also be included.

Hydrogen-powered 20 metre aluminium yachts with underwater viewing areas will transport guests around the resort.

“It is like a big aquatic animal stretching out from the land into the sea and extends horizontally for one kilometre thanks to two long wide arms,” Giancarlo Zema said.