eCoast is a New Zealand-based marine and freshwater consultancy providing expert technical and advisory services to both public and private sector clients in NZ, Australasia, the Pacific and around the world.

eCoast’s consultants have a wide range of oceanographic and aquatic expertise and experience in both physical and biological processes, with core areas of high-level expertise.


  • COMPLEX NUMERICAL MODELLING of coastal processes, estuaries, rivers and lakes, and impacts of activities – dispersion (effluent, oil, hyper-saline plumes, chemicals, pollutants, and others),  tides, waves sediment transport, erosion/accretion, beaches, coastal structures, dredging, flooding, water-quality, impacts on mangroves/seagrass and a range of other parameters in 2D and 3D.
  • BEACH PROTECTION STRATEGIES AND CLIMATE CHANGE ADAPTATION – development of holistic adaptive management plans for existing conditions and sea level rise resilience and adaptation, including hybrid-solutions combining the most compatible physical and biological solutions for each specific site.
  • TSUNAMI MODELLING – development of tsunami sources, propagation and inundation modelling, tsunami hazard assessments and tsunami effects in ports and harbours.
  • FRESHWATER SYSTEMS – modelling of watersheds, residential and urban storm water flows and riverine flood modelling as well as freshwater sampling and water quality monitoring.
  • FIELD DATA COLLECTION – experience and capacity to collect data pertaining to waves, currents, salinity, bathymetry, sediment suspension, and the whole range of additional parameters.
  • MONITORING AND BIO-STATISTICS – design and capacity for monitoring of biological and physical processes and impacts due to coastal developments.
  • SURF SCIENCE AND SURF BREAK MANAGEMENT – eCoast consultants are the world’s leading technical and scientific group concerning surf science and surf break management including the classification of surf break quality, surf break mechanics, the impact of coastal activities, amenity value and surf break protection.
  • EXPERT WITNESSES – providing experience and evidence in physical and biological processes for legal cases.


Whaingaroa(Raglan) Rivers Forecast

Whaingaroa(Raglan) Rivers Forecast

Surf Break Research MBIE

Surf Break Research MBIE

Lyall Bay

Lyall Bay

Castlecliff Coastal Management

Castlecliff Coastal Management



"Innate knowledge of the coast and surf zone. "

"Bridging the gap between physical process and marine ecological impacts. "

"Providing technical specialist advice on marine community diversity and functionality. "

"Holistic approach considering catchment to coast. "

"Multipurpose reef design and development. "


"Evaluations of surfing wave quality, practised experts in surf break protection and leaders in surf science. "




  • A couple of variance images of Piha and Lyall Bay as part of the surf break project. Too good not to share. 
#surfing #surfbreakprotection #piha #lyallbay #newzealand #surfnz #loveyourwork
  • Here's Dougal Greer talking to the continuing education group in hamilton today about marine pollution in all its nasty forms. Got to talk about our latest work in plastic pollution and ways of cleaning it up.
#community #keepitgreen #ecoast #marine #environment #plasticpollution #beatplasticpollution #newzealandnatural
  • Here's a short animation eCoast Director Jose Borrero made for World Tsunami Awareness Day... It is the maximum transpacific tsunami height from 72 tsunamis generated by identical Magnitude 9 earthquakes. The individual earthquakes are shifted by 500 km along along the subduction zones of the Pacific "Ring of Fire''. The purposes is to simply highlight the different propagation patterns from each source region. The results show that not all tsunamis are equal and certain areas are able to project the tsunami energy much more efficiently than others.  Where will our next trans-pacific tsunami come from???
  • Shocking footage of a #tsunami coming ashore on Palu, Sulawesi. Tsunami caused by a M~7.5 earthquake. A bit of #tsunami science about this event. First off, this is a very atypical tsunami, the fault that broke was strike-slip and was nearly vertical in the earth. This means that the quake movement was side to side and not up/down. Usually these types of quakes don’t make tsunamis. So there was probably a secondary mechanism in play, maybe some sort of an underwater landslide. A similar thing happened in this area in ‘92 or ‘93 on Flores Island and in ‘94 in the Philippines. Also in ‘98 in Papua New Guinea, a small quake triggered a big landslide causing the tsunami there that killed several thousand people. So yeah, bottom line, if you are near the coast and feel an exceptionally strong or long earthquake, immediately head to high ground (+10m if possible) and wait for half an hour minimum. If any sign of ocean agitation, stay away for another hour. As surfers, we spend a lot of time in tsunami prone places... so best to be aware and prepared since you never know when the next one will strike...

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Remembering the Tsunami of August 1868

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This week (August 13-15, 2018) marks the 150th anniversary of one of the largest tsunamis in history. The tsunami was devastating in the source area along the Peru/Chile border and…

eCoast Receives Funding for Tsunami Research and Assessment in the Northland Region

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eCoast Marine Consulting and Research are set to equip the Northland Regional Council with planning and assessment tools for a timely response in the event of a tsunami. On November…

New Zealand Coastal Society Conference – Sustainability Award

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We went en masse to this year’s New Zealand Coastal Society Conference. We had the honour of sponsoring the new Sustainability Award, aimed at promoting sustainable coastal leadership and action…

eCoast Heads to European Surf Park Summit

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Shaw and Ed headed to the first ever European Surf Park Summit last week, held at Surf Snowdonia in North Wales. They joined 75 delegates from around the world to…