SEMRU, at NUI Galway, carried out a survey of domestic residents in Ireland in 2019 as part of the Marine Institute’s funded project “Valuing and understanding the dynamics of Ireland’s Ocean Economy” (PBA/SE/16/01). The purpose of the household survey was to profile the domestic market for single day trips (leisure) and overnight trips (tourism) for coastal and marine related activities in Ireland. The results of the survey are also used to estimate what proportion of an Irish resident’s total domestic tourism expenditure is in coastal areas (coastal tourism) and what proportion is spent on undertaking marine related activities (marine tourism). The survey complements SEMRU’s overseas marine tourism report published in 2019, where the demand for the same activities as analysed here was also examined amongst overseas visitors to Ireland.