CEFASa96617a7-06ad-4706-a0ab-cc31f89f9b0a English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2024-03-27T12:58:29 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Videos and still images of the seabed from the 2017 survey of Grenada and the Grenadines Islands in the Caribbean 2021-07-21 publication 2024-03-27 revision 2021-07-16 creation CEFAS21271 https://data.cefas.co.uk As part of the Commonwealth Marine Economies Programme (CMEP) Cefas collected 87 drop camera video tows of the seabed on the southern and western sides of the island of Grenada and around the Carriacou and the Grenadines Islands. These videos of the seabed were to characterise the benthic fauna within the area and support the creation of benthic habitat maps from UKHO lidar data. The videos and still images were acquired during the 2017 survey using a lightweight drop camera frame with two GoPros simultaneously collecting stills and video data. Two lasers were fitted for scaling images and additional lighting provided real colour images of the seabed. The drop camera frame was lowered to the seabed by hand from a vessel, with the video monitored to maintain a consistent height above the seabed. Tows were 15 minutes long with the vessel drifting in neutral so the distance covered in each tow varied. Sample depths ranged from 3-40 m and covered a range of habitats including bare sediment, seagrass, and coral and sponge dominated reefs. Still images were acquired every minute at a point when the seabed was clearly in focus. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor notPlanned Seabed photography SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Benthos GEMET, version 1.0 2008-06-01 publication Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Benthic boundary SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Public data - no limitations to reuse English environment -70.00 -60.00 10.00 20.00 2017-08-09 2017-10-17 Unknown https://data.cefas.co.uk/view/21271 Cefas Data Portal information The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. dataset INSPIRE Data Specification on Habitats and Biotopes – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification This data holding contains the raw drop camera videos and still images for all the stations collected during this 2017 survey. High-definition video were subsequently overlaid with station information, GPS and time. Still images also contain no overlaid metadata as the GPS positions and extracted information are stored in the Proforma document. MEDIN 3.1.1