The Integrated Mapping FOr the Sustainable Development of Ireland's MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey Ireland (GSI) and the Marine Institute (MI). The Magnetometer dataset is an auxillary dataset that measures the magnetic field or field anomalies at a particular location. Data is collected on an ongoing basis as part of the yearly INFOMAR Surveys. The data is acquired as part of INFOMAR surveys and is collected onboard research Vessels. Two files are recorded for each line of survey; Pinger Raw data - .cod and a Pinger Image TIF. Post surveys the data is QC’d by playing the data back using Coda GeoSurvey software. Coda format files are converted to industry standard SEGY. The spectroradiometer dataset is used to look for variation in the spectral response between and within species (and across seasons) to aid in the automated identification of different seaweed species using remote sensing technology.