Company lists · Data refreshed September 2026

Top 25 Marine resource consulting firms based in Spain

Name: Marine resource consulting firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 211 companies tracked

RevenueBase identified 211 marine resource consulting firms headquartered in Spain as of September 2026 and tracks 1,568 professional contacts across them, including 205 with verified work emails and 19 with mobile numbers. Madrid is the largest hub.

This list covers marine resource consulting firms headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

211Companies

1,568Contacts tracked

205Verified emails

19Mobile numbers

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The 25 largest marine resource consulting firms based in Spain

Ranked by team size

Top 25 of 211 marine resource consulting firms based in Spain, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names marine resource consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Ideas MedioambientalesPartial evidence	Albacete, SpainHQ checked Sep 5, 2026	51-200	135
	“Consulting company based in Castilla-La Mancha (Spain) of national and international scope.” Source: company website · checked Sep 5, 2026
2	TecnoambienteIndirect evidence	Cerdanyola Del Vallès, SpainHQ checked Sep 5, 2026	51-200	126
	“Tecnoambiente, a wholly owned subsidiary of TRADEBE, is a multidisciplinary geoscience-environmental survey, subsea inspections and environmental consultancy company, with an…” Source: company website · checked Sep 5, 2026
3	ZunibalIndirect evidence	Derio, SpainHQ checked Sep 5, 2026	51-200	47
	“Founded in 1995 in Derio (Spain), Zunibal has established itself as a benchmark in the field of innovation and the development of advanced technological solutions dedicated to…” Source: company website · checked Sep 5, 2026
4	Ecos GroupIndirect evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 5, 2026	11-50	39
	“At ECOS Group (ECOS Estudios Ambientales y Oceanografía S.L.), we are an environmental consultancy and coastal engineering firm with over 18 years of experience, specialized in…” Source: company website · checked Sep 5, 2026
5	Siport21Strong evidence	Las Rozas De Madrid, SpainHQ checked Sep 5, 2026	11-50	36
	“Siport21 is a port engineering and maritime safety consulting company.” Source: company website · checked Sep 5, 2026
6	AltáciaIndirect evidence	Madrid, SpainHQ checked Sep 5, 2026	11-50	29
	“Somos un socio de confianza estratégico para nuestros clientes.” Source: company website · checked Sep 5, 2026
7	Extrepronatur SLIndirect evidence	Badajoz, SpainHQ checked Sep 5, 2026	11-50	29
	“EXTREPRONATUR SL es una consultora medioambiental y servicios AVENIDA JUAN PEREDA PILA, 1, BADAJOZ, Badajoz, Spain.” Source: company website · checked Sep 5, 2026
8	ElittoralIndirect evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 5, 2026	11-50	28
	“elittoral S.L.N.E- Estudios de Ingeniería Costera y Oceanográfica Servicio integral de asesoramiento y consultoría en aquellas empresas o instituciones que pretendan acometer…” Source: company website · checked Sep 5, 2026
9	Zumain IngenierosIndirect evidence	Madrid, SpainHQ checked Sep 5, 2026	11-50	27
	“Zumain Ingenieros, inicia su andadura en el año 2002, con la intención de desarrollar su trabajo en el sector de los estudios y proyectos ambientales, con el objetivo de dar un…” Source: company website · checked Sep 5, 2026
10	AisterPartial evidence	Moaña, SpainHQ checked Sep 5, 2026	51-200	26
	“We are a company specialized in marine aluminium sea works focused on Workboats, Maritime shipbuilding and Marinas.” Source: company website · checked Sep 5, 2026
11	Consultoría DE Técnicas AmbientalesPartial evidence	Madrid, SpainHQ checked Sep 5, 2026	11-50	24
	“Consultoría de Técnicas Ambientales is an independent company dedicated to monitoring, control, advice and environmental consulting; providing its service, both to the public and…” Source: company website · checked Sep 5, 2026
12	BluenewablesIndirect evidence	Tenerife, SpainHQ checked Sep 5, 2026	11-50	22
	“BlueNewables is an engineering consultancy at the cutting edge of the innovation within the blue economy.” Source: company website · checked Sep 5, 2026
13	Ocean Infrastructures ManagementPartial evidence	Madrid, SpainHQ checked Sep 5, 2026	11-50	21
	“Ocean Infrastructures Management is an international port consulting firm.” Source: company website · checked Sep 5, 2026
14	GtsuniversalIndirect evidence	Algeciras, SpainHQ checked Sep 5, 2026	201-500	18
	“Innovative, Safe, Operational 24/7, Efficient, Adaptable, High Technical Quality.” Source: company website · checked Sep 5, 2026
15	Merchant Union SLPartial evidence	Vigo, SpainHQ checked Sep 5, 2026	11-50	11
	“Merchant Union SL has more than 25 years of experience in the marine sector.” Source: company website · checked Sep 5, 2026
16	GaiambienteIndirect evidence	Madrid, SpainHQ checked Sep 5, 2026	1-10	9
	“GAIAMBIENTE es una consultora especializada en medio ambiente que brinda sus servicios tanto a organismos públicos como a empresas privadas.” Source: company website · checked Sep 5, 2026
17	Ekolur Asesoría AmbientalIndirect evidence	Oiartzun, SpainHQ checked Sep 5, 2026	11-50	8
	“Empresa de consultoría y servicios especializada en el medio ambiente, referentes en biodiversidad, evaluación ambiental y planificación y gestión del agua./ Ingurumenean…” Source: company website · checked Sep 5, 2026
18	Neos Maritime ConsultingIndirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 5, 2026	11-50	8
	“Una apuesta por la consultoría integral de ingeniería y construcción.” Source: company website · checked Sep 5, 2026
19	MAR Recruitment & ConsultingIndirect evidence	Barcelona, SpainHQ checked Sep 5, 2026	1-10	7
	“Mar Recruitment surge de la necesidad de facilitar la relación entre las empresas marítimas y los profesionales del propio ámbito.” Source: company website · checked Sep 5, 2026
20	Marexi Marine TechnologyPartial evidence	Vigo, SpainHQ checked Sep 5, 2026	11-50	6
	“Marine Technology Ximo, Ltd.(Marexi) began its operation on March 17, 2005.It´s a dynamic company from Galicia that bases its activity on the constant research and development of…” Source: company website · checked Sep 5, 2026
21	Gestema SURIndirect evidence	Granada, SpainHQ checked Sep 5, 2026	1-10	5
	“Gestema Sur es una consultora especializada en el sector ambiental integrada por un equipo interdisciplinar de biólogos, ambientólogos, abogados, ingenieros y otros profesionales…” Source: company website · checked Sep 5, 2026
22	Head UP ServicesPartial evidence	O Porriño, SpainHQ checked Sep 5, 2026	201-500	5
	“HEAD UP SERVICES is a management consulting company based out of Barrio San Andrés Pontellas, 20 36412 Porriño comercial@headup.es -” Source: company website · checked Sep 5, 2026
23	Arda Gestió I Estudis Ambientals SLIndirect evidence	Barcelona, SpainHQ checked Sep 5, 2026	1-10	5
	“ARDA Gestió i Estudis Ambientals fou creada l'any 1990 per un equip de professionals especialitzats en matèria de MEDI AMBIENT.” Source: company website · checked Sep 5, 2026
24	ARC Consultoría MedioambientalIndirect evidence	Donostia / San Sebastián, SpainHQ checked Sep 5, 2026	1-10	4
	“En ARC prestamos servicios profesionales de consultoría y desarrollamos estudios y proyectos ambientales.” Source: company website · checked Sep 5, 2026
25	PloatechStrong evidence	Girona, SpainHQ checked Sep 5, 2026	1-10	4
	“PLOATECH is a marine technology consulting company that provides advanced scientific and customized engineering services focusing in the underwater domain.We specialize in remote…” Source: company website · checked Sep 5, 2026

Showing 25 of 211 marine resource consulting firms based in Spain

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Marine resource consulting firms based in Spain at a glance

As of Sep 5, 2026

1-10Median size (employees)

MadridLargest hub · 24 HQs

19Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

140

11-50

51-200

201-500

Verified emails by last verification

0–30

190

31–60

61–90

90–180

180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marine resource consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “marine resource consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among marine resource consulting firms, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 205 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

How many marine resource consulting firms are there based in Spain?

RevenueBase identified 211 marine resource consulting firms headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ideas Medioambientales, headquartered in Albacete, tops this list with the largest team on record.

Which city has the most marine resource consulting firms?

Madrid leads with 24 headquartered companies, followed by Barcelona (16) and Vigo (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 205 verified decision-maker contacts tracked across these 211 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.