Version 1.0.0 Data on demersal and mega-benthic species were sampled in the context of the MEDITS suveys carried out on the Sanish Mediterranean continental shelf since 1994. MEDITS is a program of bottom trawl surveys developed annually in the Mediterranean, in which all the participants use the same gear, sampling protocol and methodology, with the objective to evaluate the abundance and distribution of stocks, independently of the data provided by commercial fisheries, and to assess the impact of the fishing activity on the environment. A protocol exists to be applied, which is reviewed and adapted during the annual coordination meetings. This protocol includes the design of the survey, the sampling gear (feature and handling), the information collected and the management of the data. MEDITS surveys are currently conducted by eleven Mediterranean countries (Albania, Croatia, Cyprus, France, Greece, Italy, Malta, Montenegro, Morocco, Slovenia and Spain), within the European Commission framework for the collection, management and use of data in the fisheries sector and support for scientific advice regarding the common fisheries policy (Data Collection Multiannual Program), with the financial support from the DG MARE and Member States. In Spain, the MEDITS surveys are developed annually from April to June, on board the R/V Cornide de Saavedra (1994-2013) and the R/V Miguel Oliver (2014-2017), along the infralittoral, circalittoral and bathyal soft bottoms off Mediterranean Iberian Peninsula and the Balearic Islands (Geographical Sub-Areas GSAs of the General Fisheries Commission for the Mediterranean GFCM 1, 2, 5 and 6) between 30 and 800 m depth. As the other MEDITS areas, and following the MEDITS protocol, it is applied a stratified random sampling, taken into account five depth strata (30-50, 51-100, 101-200, 201-500 and 501-800 m) and the four Geographical Sub-Areas (GSA) established by the General Fisheries Commission for the Mediterranean (GFCM) in the area: 1 and 2 (Northern Alboran and Alboran Island, respectively), 5 (Balearic Islands) and 6 (Northern Spain). The bottom trawl hauls are performed during daylight, with an effective duration (from the arrival of the gear to the seabed until its departure) of 30 and 60 minutes, depending on the depth (&lt;200 and &gt;200 m, respectively) and the speed is around 3 knots. The sampling gear is a bottom trawl made of four panels, referenced as GOC73, with 10 mm of mesh side in the codend and doors of type Morgére, with 2.5-3 m vertical opening and 16-22, horizontal opening. SCANMAR system is used in each haul to estimate its effective duration and the geometry of the net. Moreover, a CTD SBE-37 is attached to the flotsam of the net to record temperature and conductivity of the water above the seafloor during the haul. On board the vessel, the catches are split into the categories and sub-categories, according the MEDITS protocol, and the total weight and number of individuals is collected. The common coding system adopted for the complete set of species is a RUBIN like coding system as defined in the NCC standard, even if this international coding system has been no longer maintained for some years. This coding system appears to be a very practical one and it would be very easy in the future to build a correspondence table with any new coding system. In respect to the NCC recommendations and as the MEDITS coding is not strictly identical to the RUBIN one (different use, species not referenced to in the RUBIN code), the "name" of this code has been changed and is for the purpose of the MEDITS called "FM list". The species identifications are made following Fisher et al. (1987). For the fish species not included in this work, the descriptions from Whitehead et al. (1984) have been used. Since 2012, the MEDITS reference list includes 82 target species. For all these species, the total number of individuals, the total weight and the individual length should be collected. This list has been further split in two groups: (i) MEDITS G1 includes 41 species with 9 demersal (3 fish, 4 crustaceans and 2 cephalopods) and 32 chondrictians, for which the total number of individuals, the total weight, the individual length and also biological parameters including sex, maturity (according to , individual weight and age (age has been proposed only for the teleosts of the Group 1) should be collected; and (ii) MEDITS G2 includes 43 species for which only total number of individuals, total weight and individual length should be collected. Standard formats are defined for the data storage and to facilitate the exchange of the data produced by the MEDITS surveys. The exchange files are in “*.csv” format, using semicolon as field separator. Four file types are defined in order to store and exchange the data: (Type A) characteristics of haul; (Type B) catches by haul; (Type C) length, sex, and maturity at aggregated level; and (Type E) age, weight and maturity by length at individual level. For more detailed information: MEDITS-Handbook. Version n. 8, 2016, MEDITS Working Group: 120 pp.This dataset was downloaded from OBIS (https://obis.org/). The records for only marine mammals, seabirds, sea turtles and rays and sharks were extracted. Records with no longitude/latitude or no date (eventDate) were excluded. OBIS dataset page: <a target="_blank" href="https://obis.org/dataset/623f4f98-4e66-4bee-9e1c-17cb74cd2d21">https://obis.org/dataset/623f4f98-4e66-4bee-9e1c-17cb74cd2d21</a> Data Provider's dataset page: <a target="_blank" href="http://ipt.vliz.be/eurobis/resource?r=medits-spain">http://ipt.vliz.be/eurobis/resource?r=medits-spain</a>1999050920090521ground conditionIn workAs neededOcean-5.043.7539.9636.29 NoneMarine BiologyTaxon coveredRays and sharksIntegrated Taxonomic Information SystemUnknownNot applicableDownloaded April, 2004http://www.itis.usda.gov/Refer to the contact information of the datasetRefer to the contact information of the datasetmailing and physical address

Refer to the contact information of the dataset

Refer to the contact information of the datasetRefer to the contact information of the datasetRefer to the contact information of the datasetRefer to the contact information of the datasetNot providedIdentified by observers or researchers conducting the surveyKingdomAnimaliaPhylumChordataSubphylumVertebrataClassChondrichthyesSubclassElasmobranchiiSuperorderEuselachiiOrderCarcharhiniformesFamilyTriakidaeGenusGaleorhinusSpeciesGaleorhinus galeusOrderMyliobatiformesFamilyMyliobatidaeGenusMyliobatisSpeciesMyliobatis aquila Public. 1. Not to use data obtained from OBIS-SEAMAP in any publication, product, or commercial application without proper attribution to the original data provider(s) and OBIS-SEAMAP unless the datasets are explicitly shown under the CC0 policy. Citations or credits are suggested as attribution. If the data you downloaded come from multiple datasets, a citation or credit to each of the datasets is required. Suggested citation for this dataset: Massutí sureda, E. 2020. Demersal and mega-benthic species from the MEDITS (Mediterranean International Trawl Survey) project on the Spanish continental shelf between 1994 and 2010. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152454) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/623f4f98-4e66-4bee-9e1c-17cb74cd2d21) Suggested citation for OBIS-SEAMAP: Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography 22(2):104-115 2. To forward the citation of any publication / report that made use of the data / tools provided by OBIS-SEAMAP for inclusion in our list of references. 3. Not to hold OBIS-SEAMAP or the original data providers liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. 4. The burden for determining fitness for use of the downloaded data for any analyses lies entirely with the user. OBIS-SEAMAP or the original data providers do not support outcomes of your analyses that used the data you downloaded from OBIS-SEAMAP. 5. To consider inclusion of the accompanying transect (effort) dataset if available into the methodology of your analyses. 6. Not to redistribute the data you downloaded from OBIS-SEAMAP through any media without contect from OBIS-SEAMAP and the original data providers unless the datasets are explicitly shown under the CC0 policy. EurOBIS Data Management Team; Enric Massutí Sureda; Cristina García Ruiz; Luis Gil de Sola; Beatriz Guijarro González; Antoni Quetglas ContiFlanders Marine Institute (VLIZ); Spanish Ministry of Economy and Competiveness Instituto Español de Oceanografía (MINECO-IEO); Spanish Ministry of Economy and Competiveness Instituto Español de Oceanografía (MINECO-IEO); Spanish Ministry of Economy and Competiveness Instituto Español de Oceanografía (MINECO-IEO); Spanish Ministry of Economy and Competiveness Instituto Español de Oceanografía (MINECO-IEO); Spanish Ministry of Economy and Competiveness Instituto Español de Oceanografía (MINECO-IEO) mailing and physical address

n/a; n/a; n/a; n/a; n/a; n/a

n/a; n/a; n/a; n/a; n/a; n/an/a; n/a; n/a; n/a; n/a; n/an/a; n/a; n/a; n/a; n/a; n/an/a; n/a; n/a; n/a; n/a; n/a n/a; n/a; n/a; n/a; n/a; n/ainfo@eurobis.org; enric.massuti@ba.ieo.es; cristina.garcia@ma.ieo.es; gildesola@ma.ieo.es; n/a; n/a OBIS and EurOBIS Relational database Massuti, Enric; García, Cristina; Guijarro, Beatriz; Quetglas, Antoni; Gil de Sola, Luis; Instituto Español de Oceanografía (IEO); Spain; (2017): Demersal and mega-benthic species from the MEDITS (Mediterranean International Bottom Trawl Survey) program at the Spanish continental shelf and upper slope between 1994 and 2010vector digital data All attributes were measured and recorded during the survey and validated by the data provider. Permissible values for date and time and coordinates were validated by the data provider and the OBIS-SEAMAP data manager. Species identification by the data provider was matched with Integrated Taxonomic Information System. All observation records are included.Data were put through the OBIS-SEAMAP data registration steps.20200524Point 1e-061e-06Decimal degrees D_WGS_1984WGS_1984 6378137.000000298.257224 Biogeographic dataBiogeographic dataNot applicableoidInternal IDData providerInternal IDidRecord IDData providerRecord IDdataset_idDataset IDData providerDataset IDscientificnameScientific nameData providerScientific namevernacularnameVernacular nameData providerVernacular nameaphiaidAphia IDData providerAphia IDtaxonranktaxononic rankData providertaxononic rankindividualcountGroup size / individual countData providerGroup size / individual counteventdateEvent date (precision varies)Data providerEvent date (precision varies)eventtimeEvent timeData providerEvent timedecimallatitudeLatitude in decimal degreesData providerLatitude in decimal degreesdecimallongitudeLongitude in decimal degreesData providerLongitude in decimal degreescoordinateprecisionCoordinate precisionData providerCoordinate precisioncatalognumberCatalog numberData providerCatalog numbercollectioncodeCollection codeData providerCollection codeoccurrencestatusOccurrence statusData providerOccurrence statusbasisofrecordBasis of record (HumanObservation / MachineObservation)Data providerBasis of record (HumanObservation / MachineObservation)modifiedDate/time the record was modifiedData providerDate/time the record was modifiednode_idNode IDData providerNode IDoccurrenceidOccurrence IDData providerOccurrence IDoccurrenceremarksOccurrence remarksData providerOccurrence remarkseventidEvent IDData providerEvent IDinstitutioncodeInstitution codeData providerInstitution codelifestageLife stageData providerLife stagesexGender of the animal if knownData providerGender of the animal if knownspeciesSpecies by providerData providerSpecies by providerdatasetidDataset ID by providerData providerDataset ID by providercountryCountryData providerCountrylocalityLocation of oceanData providerLocation of oceanwaterbodyDetails of oceanData providerDetails of oceandroppedFlag indicating the record was dropped (always false)Data providerFlag indicating the record was dropped (always false)absenceFlag indicating the record represents the absence of the species (always false)Data providerFlag indicating the record represents the absence of the species (always false)marineFlag indicating the record is for marine life (always true)Data providerFlag indicating the record is for marine life (always true)This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.Enric Massutí Sureda, Spanish Ministry of Economy and Competiveness Instituto Español de Oceanografía (MINECO-IEO) Nicholas School of Environment, Duke University OBIS-SEAMAP mailing and physical address

A328, LSRC

DurhamNC27708USA 919-613-8021 seamap-contact@duke.edu OBIS-SEAMAP Dataset ID 103152454Not to hold OBIS-SEAMAP liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. Also please refer to Use Constraints. CSV and ESRI shapefile OBIS-SEAMAP Free Go to the OBIS-SEAMAP web site. 2020070220200702 Ei Fujioka Nicholas School, Duke Universitymailing and physical address

A328, LSRC

DurhamNC27708USA 919-613-8021 seamap-contact@duke.edu FGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local time http://www.nbii.gov/Biological Data Profile