日本海海底油層を探すの英語

offshore oil reserves

investigation of the deep seabed near the Japanese islands by a Japanese and French partnership called {Kaiko}

deep-sea exploration

A dense fog hangs over the sea.

to sweep the sea （with a search-light）

to sweep the sea with a search-light―A search-light sweeps the sea

a deep-sea submersible for academic exploration, called

Next-Generation Technology for Deep-Sea Research

a naval radar to search for surface targets

an offshore oil field

a geographical feature called {"the bottom of the sea in a very deep region"}

a submarine mine

deep‐sea fishery

to sound the sea―take sounding―heave the lead

to sound the sea―take sounding―heave the lead

the steep descent of the seabed from the continental shelf to the abyssal zone

to go the bottom―go to Davy Jones's locker―find a watery grave

a mass of lead at the end of a sounding line

Successful Test of Deep-Sea Research Vehicle

an enclosure that is used to stop oil that has flowed out of a ship from spreading

a map of the magnetic field of the seabed

navigable deep diving vessel for underwater exploration

to lay a （submarine） cable

a submarine telegram

Japan Becomes First to Extract Gas From Undersea Methane Hydrate

Cold-Seep Clams Found on Undersea Mantle Material

an underwater device used to locate fish, called fish-finder

a submarine cable

New Record Set in Deep-Sea Cruising

submarine telegraph