One of the Nekton subs out exploring Bermuda's ocean depths (Photograph supplied)

Bermuda’s deep sea waters are being studied with submersibles by the international Nekton ocean exploration team, as part of Nekton’s XL Catlin Deep Ocean Survey.

Work has included mapping seamounts off the island’s coast, where Nekton scientists have studied rich ecosystems far below the waves.

The expedition will run through the middle of August, charting waters 200 metres and more beneath the surface.

Founded by Oliver Steeds and James Wallace, the Nekton Foundation brings together scientists from around the world.

The local mission, launched earlier this month, is part of a continuing study exploring the effects of pollution and climate change.

The scientific findings will be released as part of the XL Catlin Deep Ocean Survey.