• Overview
  • Objectives
  • Skills you gain
  • Costs to Consider
  • Site Conditions

On this expedition, you will spend two weeks in the dry forests of Mahamavo and then two weeks on the reefs in Nosy Be. During the first week at the forest camp you will have lectures about Madagascar wildlife and conservation, but for most of the time you will be rotating between a series of research projects. These projects include studies on the structure and composition of the forest, pollard counts of butterflies, spotlighting for amphibians, crocodile transect surveys, herpetofauna routes, bird point counts and mist netting and distance sampling for lemurs (both day and night). In addition, there are other projects running such as colour change in chameleons, sifaka population studies, analysis of land change from satellite data, mark-release-recapture of nocturnal mouse lemurs and others that also require assistance from time to time. At the end of the two weeks you will transfer to the island of Nosy Be. If you are not dive trained then your first week at the marine site will involve completing a PADI Open Water dive training course and then for your final week you then move onto the Indian Ocean reef ecology course which is two lectures each day and two dive based practicals. There is also the option of obtaining your PADI Advanced Open Water* qualification on site during this second week. Alternatively, if you are already dive trained or just want to snorkel then your first week at the marine site will be spent completing the Indian Ocean reef ecology course and then your last week will be spent helping the researchers with the 3D modelling of the reefs and quantification of the fish communities from the stereo-video surveys.
*This carries an additional cost

Madagascar Mahamavo Research Objectives

Madagascar boasts some of the most spectacular biodiversity in the world: lemurs, tenrecs, baobabs and over half of all known chameleon species. Much of this biodiversity is endemic. The Operation Wallacea surveys are completing research on the dry forests and associated wetlands of Mahamavo in the northwest of Madagascar.

Madagascar has declared 17% of its land as protected areas, but much of this land is already severely degraded, so the actual area of land under protection is much smaller. An alternative approach to assigning protected area status and prohibiting usage, is to develop community managed areas such as Mahamavo, where there is a mosaic of protected and managed areas. DTZ, the German Technical Support Agency has established a series of community managed forests in the Mahamavo area that appear to be successful and may form the basis for conservation and improving livelihoods in other parts of Madagascar. The Opwall teams here are monitoring how the forest structure and biodiversity in these community managed forests are changing over time to identify whether this management strategy can provide a viable alternative to national parks in terms of protecting biodiversity.

The dry forests around Mahamavo have exceptional diversity with two species of diurnal lemur and another five to six species of nocturnal lemurs, two spectacular species of chameleons, three known species of leaf-tailed geckos, and many endemic birds. In addition to the forest work, the Opwall teams are also documenting the biodiversity value of the adjacent wetlands with a view to getting this area upgraded to Ramsar status (a Ramsar Site is a wetland site designated of international importance under the Ramsar Convention).

Madagascar Nosy Be Research Objectives

Despite plans by the Madagascan government to expand its network of marine protected areas (MPAs), the country’s coral reefs remain under threat from local pressures such as overfishing, and global threats such as climate change. However, surveys by the World Conservation Society found the reefs around islands near Nosy Be, off Madagascar’s northwest coast, to be amongst the healthiest anywhere in the Western Indian Ocean. They found live coral cover to have increased in recent years, and fish biomass to be at carrying capacity.

The larger island of Nosy Be is home to a sizeable human population and a bustling tourism industry, likely placing the surrounding coral reefs under increased pressure. Opwall will be working along a gradient of reef protection, from the strictly protected MPA at Nosy Tanihely to unmanaged reefs further along the coast. Our aims are to establish a technology-driven standardised reef monitoring program which can be combined with data sets from other key bioregions to explore patterns in coral reef functioning from present to future. Via this programme we will then collect long term reef health data across this human use gradient to compare the performance of reefs around Nosy Be to those of more remote locations nearby.

  • Attend lectures and field bases practicals on Madagascan ecology and conservation
  • Learn survey methods to sample birds, invertebrates, reptiles, amphibians, lemurs and habitat
  • Learn how to use a GPS and smart phones for data collection
  • Opportunity to specialise in a particular project working alongside scientists
  • Visit a tradition Malagasy village and school and learn about their culture
  • Learn some basis Malagasy words and phrases
  • Gain an internationally recognized SCUBA qualification
  • Attend our marine research lecture series
  • Complete a week-long training course on Indian ocean reef ecology (if snorkeling or already dive trained)
  • Opwall fee
  • Cost of international flights into and out of Antananarivo
  • Cost of internal travel to and from the start and end point of the expedition, plus any hotels you might require. This costs around £430 or $625 on average. Extra nights’ accommodation in Antananarivo costs around £26 or $38.
  • Visa costs of €25 (30 days) or €35 (30-60 days) to be paid in cash on arrival in Madagascar.
  • Dive equipment rental – £50 or $75 per week for a full dive kit. If you only wish to snorkel and want to hire snorkel equipment, the cost is £25/$38 per week. Please note that wetsuits cannot be provided – you should bring your own.
  • Park entrance fees – £20 or $29 for the terrestrial site, and £20 or $29 for the marine site.
  • PADI manual and PIC card (if you are completing your Open Water qualification) – £69 or $87 approx.
  • Vaccinations and prophylactic medicines – cost can vary depending on your healthcare provider.
  • All prices in GBP or USD unless specified. Visa costs are all in EUR.


In Madagascar it is the dry season so it is hot during the day (temperatures between 25 and 30degrees Celsius) with extremely little chance of rain in the forest and very occasional rain at the marine site. During the evenings the temperature does drop to around 18 degrees Celsius with occasional cold spells getting as low as 14 degrees Celsius.

Fitness level required
Moderate. In the forest most surveys require walking long distances, and although the terrain is relatively flat you will be walking mostly on sand.  Fitness requirements for the marine site is low.

Creature comforts
Facilities at the forest camps are basic (tents, bucket showers, long drop toilets). The site has no phone signal or wifi. Facilities at the marine site are a little less rustic with dorm style accommodation and running water for showers and flushing toilets. The marine site does get some phone signal and limited wifi.


  • Madagascar
  • Antafiameva
  • Mariarano
  • Nosy Be Marine Site
  • Matsedroy

Want to get involved with this project?


Want to get involved with this project?

Wallace House, Old Bolingbroke, Spilsby, Lincolnshire PE23 4EX, UK
| +44 (0) 1790 763194 | info@opwall.com