Company lists · Data refreshed September 2026

Top 25 Marine environmental consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 582 companies tracked

RevenueBase identified 582 marine environmental consulting firms headquartered in Australia as of September 2026 and tracks 8,212 professional contacts across them, including 2,927 with verified work emails. Perth is the largest hub.

This list covers marine environmental consulting firms headquartered in Australia, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

582Companies

8,212Contacts tracked

2,927Verified emails

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The 25 largest marine environmental consulting firms based in Australia

Ranked by team size

Top 25 of 582 marine environmental consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	GO Offshore	Partial evidence	West Perth, AustraliaHQ checked Sep 28, 2026	201-500	576 contacts →
	Partial evidence “GO OFFSHORE is an international energy services company, specialising in marine services to the offshore industry.” Source: RevenueBase Database · checked Sep 28, 2026
2	ASP Ships Group	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	1,001-5,000	546 contacts →
	Partial evidence “The ASP Ships Group provides services and solutions to the global maritime industry.” Source: RevenueBase Database · checked Sep 28, 2026
3	Bhagwan Marine	Partial evidence	Perth, AustraliaHQ checked Sep 28, 2026	501-1,000	376 contacts →
	Partial evidence “Bhagwan Marine is Australia's largest marine solutions provider operating in the offshore energy, subsea, ports & inshore and defence sectors.” Source: RevenueBase Database · checked Sep 28, 2026
4	Australian Offshore Solutions PTY LTD	Partial evidence	Applecross, AustraliaHQ checked Sep 28, 2026	501-1,000	273 contacts →
	Partial evidence “Australian Offshore Solutions Australian Offshore Solutions offers a diverse range of specialised marine services to the offshore oil and gas and construction industries.” Source: RevenueBase Database · checked Sep 28, 2026
5	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	201-500	262 contacts →
	Partial evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 28, 2026
6	ECO Logical Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	201-500	211 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 28, 2026
7	Total AMS	Partial evidence	North Fremantle, AustraliaHQ checked Sep 28, 2026	201-500	198 contacts →
	Partial evidence “For more than 25 years, TAMS has partnered with clients through collaborative delivery models, applying specialist expertise to construct and maintain critical marine and port…” Source: RevenueBase Database · checked Sep 28, 2026
8	Maritime Constructions	Partial evidence	Port Adelaide, AustraliaHQ checked Sep 28, 2026	51-200	124 contacts →
	Partial evidence “Maritime Constructions is a complete provider of specialist marine infrastructure solutions.” Source: RevenueBase Database · checked Sep 28, 2026
9	Shelf Subsea	Partial evidence	Osborne Park, AustraliaHQ checked Sep 28, 2026	51-200	119 contacts →
	Partial evidence “SHELF is a totally independent commercial diving, engineering, project management and marine support & logistics company.” Source: RevenueBase Database · checked Sep 28, 2026
10	Pacific Marine Group	Indirect evidence	Townsville, AustraliaHQ checked Sep 28, 2026	51-200	117 contacts →
	Indirect evidence “Who Are We?” Source: RevenueBase Database · checked Sep 28, 2026
11	Earth Systems	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	101 contacts →
	Partial evidence “At Earth Systems, we believe that solving the world’s environmental challenges requires more than just knowledge-it takes innovation and action.” Source: RevenueBase Database · checked Sep 28, 2026
12	Toolijooa Environmental Restoration	Partial evidence	Terrey Hills, AustraliaHQ checked Sep 28, 2026	51-200	101 contacts →
	Partial evidence “Toolijooa Environmental Restoration is a leading provider of environmental management and restoration services throughout the Greater Sydney Region, the Hunter and beyond.” Source: RevenueBase Database · checked Sep 28, 2026
13	Epic Environmental	Partial evidence	Brisbane, AustraliaHQ checked Sep 28, 2026	51-200	94 contacts →
	Partial evidence “Epic offers industry leading environmental solutions to national and selected international markets.” Source: RevenueBase Database · checked Sep 28, 2026
14	AMOG	Indirect evidence	Glen Waverley, AustraliaHQ checked Sep 28, 2026	51-200	80 contacts →
	Indirect evidence “Expertise.” Source: RevenueBase Database · checked Sep 28, 2026
15	Natural Area	Strong evidence	Malaga, AustraliaHQ checked Sep 28, 2026	51-200	76 contacts →
	Strong evidence “Natural Area is a wholly Western Australian owned and operated company providing environmental consulting and on-ground environmental management to government, property…” Source: RevenueBase Database · checked Sep 28, 2026
16	Bastion Defence	Strong evidence	Sydney, AustraliaHQ checked Sep 28, 2026	51-200	75 contacts →
	Strong evidence “Bastion Defence Consulting is a premier maritime professional services consulting firm providing a broad range of services across Australia to a number of clients in the Defence…” Source: RevenueBase Database · checked Sep 28, 2026
17	Opec Systems	Partial evidence	Lennox Head, AustraliaHQ checked Sep 28, 2026	51-200	70 contacts →
	Partial evidence “Public and private sector organisations across the globe choose OPEC Systems to creatively and intelligently solve their environmental engineering challenges.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ecology And Heritage Partners PTY LTD	Indirect evidence	Ascot Vale, AustraliaHQ checked Sep 28, 2026	51-200	68 contacts →
	Indirect evidence “Thank you for visiting Ecology and Heritage Partners.” Source: RevenueBase Database · checked Sep 28, 2026
19	Hydrobiology	Strong evidence	Milton, AustraliaHQ checked Sep 28, 2026	11-50	67 contacts →
	Strong evidence “Hydrobiology is an Environmental Consulting Company offering integrated services in the physical, biological and chemical processes of environmental systems with a particular…” Source: RevenueBase Database · checked Sep 28, 2026
20	E2m	Partial evidence	Milton, AustraliaHQ checked Sep 28, 2026	11-50	64 contacts →
	Partial evidence “At e2m, we set the consultancy standard for terrestrial ecology, environmental approvals and environmental compliance.” Source: RevenueBase Database · checked Sep 28, 2026
21	Advanced Aquarium Technologies	Indirect evidence	Kunda Park, AustraliaHQ checked Sep 28, 2026	51-200	59 contacts →
	Indirect evidence “For almost 25 years, AAT has been at the forefront of public aquarium design, construction and service.” Source: RevenueBase Database · checked Sep 28, 2026
22	Environmental Earth Sciences International Eesi	Strong evidence	Chatswood, AustraliaHQ checked Sep 28, 2026	51-200	49 contacts →
	Strong evidence “EESI Group, a leader in brown environment consulting, serves the mining, waste & landfill, urban development, and farming sectors across Australia and the UK.” Source: RevenueBase Database · checked Sep 28, 2026
23	O2marine	Strong evidence	Fremantle, AustraliaHQ checked Sep 28, 2026	51-200	48 contacts →
	Strong evidence “O2 Marine provides clients with efficient and high quality environmental and project outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
24	ERIAS	Partial evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	11-50	46 contacts →
	Partial evidence “SPECIALISTS IN DELIVERING LIFE-OF-PROJECT ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT AND MANAGEMENT SOLUTIONS ERIAS was founded by experienced environmental professionals with a…” Source: RevenueBase Database · checked Sep 28, 2026
25	Anderson Environment & Planning	Strong evidence	Carrington, AustraliaHQ checked Sep 28, 2026	51-200	44 contacts →
	Strong evidence “Anderson Environment & Planning is an environmental consulting company based out of 10 Darvall St, Carrington, Australia.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: marine environmental consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names marine environmental consulting firms.
Partial evidence: Its own public description names part of marine environmental consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 582 marine environmental consulting firms based in Australia

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Marine environmental consulting firms based in Australia at a glance

As of Sep 28, 2026

35.6%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

8.8%Largest-city concentration · Perth

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

358

11-50

159

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 582 companies.

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 environmental consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “marine environmental consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names marine environmental consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among marine environmental consulting firms, and records with no verified work email. Companies headquartered outside Australia 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 its RevenueBase Smart Search 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, 2,927 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 28, 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.

Marine environmental consulting firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names marine environmental consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many marine environmental consulting firms are there based in Australia?

RevenueBase identified 582 marine environmental consulting firms headquartered in Australia 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?

GO Offshore, headquartered in West Perth, tops this list with the largest team on record.

Which city has the most marine environmental consulting firms?

Perth leads with 51 headquartered companies, followed by Brisbane (31) and Melbourne (28).

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 2,927 verified decision-maker contacts tracked across these 582 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 28, 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 Smart Search, 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.