Seabed creatures: Lough Hyne has them in abundance. Illustration: Michael Viney

The Mayo sea in November can be tamed by a wind from the east, sidling in to the strand in little lappets of frilly waves. A whole day of sun can come(...)

Inishbofin: a diver died after he was airlifted to hospital when he encountered difficulties off Inishbofin, Co Galway, on July 14th

The Irish Underwater Council, the national governing body for divers, has said it is “shocked by the unprecedented occurrence” of six recreational di(...)

Two of the deaths resulted from ‘combination dives’. . . [which] are, by their very nature, technical and dangerous and require careful calculation. Photograph:  Nigel Roddis/Reuters

“The sea, once it casts its spell, holds one in its net of wonder forever,” the late French diver, explorer and film-maker Jacques-Yves Cousteau once (...)

Underwater adventures: the first president of Comhairle Fo-Thuinn, Shane O’Connor, and his wife, Betty, about to go diving at Carraroe, Co Galway, around 1959

In the gear bag: three or four pullovers, shirts and Army long johns. From the shoreline: swim out, invert and hold your breath. When Mick Mori(...)

Life aquatic: a spider crab in Keem Bay, on Achill Island. Photograph: Richard Thorn

This summer Laura Taylor hitched up a trailer, took it to south Co Mayo and offered guided snorkelling tours of Achill Island’s tranquil Keem Bay. Cap(...)