The boy who nearly drowned

Anjani Ganase, Trinbagonian marine biologist, continues her exploration of marine Tobago. In this issue, she talks with marine scientist Jahson Alemu who is working to preserve the coral reefs of Tobago, which serve as coastal protection as well as habitats for species that support livelihoods in food and tourism.
Follow Anjani Ganase on twitter: @AnjGanase

“I wanted to be a marine biologist when I learned to SCUBA dive. But my connection to the ocean started well before that. I almost drowned once - my fault really - 11 year old + big waves + following friends + not knowing how to swim = problems. That was quite scary, so I learned to swim and in the process I got exposure to ocean exploration. But when I learned to SCUBA, it was a new world to discover. I wanted to know everything about everything underwater.”

Jahson prepares his dive gear. Photo by Mark Pierre

Following his near drowning, Jahson decided he would never be in that situation again. He joined 6th Trinidad Sea Scouts, learned to swim and developed skills that made him ocean aware. He would go camping on beaches and snorkel along the coast.

He learned to SCUBA dive when he was studying for his undergraduate degree (Biology) at the University of the West Indies. He would look for the small creatures that made their homes in the gaps and crevices of the reef. He was always intrigued by creatures with odd traits.

“There are lots of large and awesome things to see under the water, turtles, corals, fish, dolphins, sharks etc, but the odd creatures always stand out to me. They are usually small and hard to see, plus they make some of the best photo subjects. These oddities diverge from the typical archetype of what animals such as crabs, fish and coral should look like, and highlight the wide diversity of creatures both in form and function found under the sea. My personal favourite is the cuttlefish, the master of mimicry. I really don't like eels though, so I'm glad I didn't meet any of them when I was starting my career.”

He graduated in 2005 and went to work with a consultancy company carrying out marine environmental assessments on coral reefs in Antigua and Barbuda and the Tobago Cays in the Grenadines. There were plans to set up marine parks. This was the first time he saw other Caribbean coral reefs apart from those in Tobago. It was also when he became aware of the dreadful state of Caribbean coral reefs and the challenges that lay ahead. He decided to dedicate his career to not just researching the causes of this degradation; but to figuring out what is required to build the resilience of Caribbean coral reefs: behaviour change among humans might be the most important.

“ 99% of the battle is influencing human perceptions and behaviours, whether it's influencing the type or size of fish we catch, to how we treat land-based waste/pollution. All the behaviours impact the ocean – together - at the same time - reinforcing and exacerbating each individual impact…”

His deep interest led to the opportunity to do a Master of Science in Marine Biology at the University of Bangor in Wales. Jahson studied the marine ecosystems of Mauritius and Rodrigues in the Indian Ocean. He worked alongside the local communities to establish marine parks. This is where he saw what the heavy dependence on coral reefs can do to a reef. The initiative to set up marine parks was the desperate final attempt by the local fishermen, who were aware that their reefs were heavily overfished and needed marine management and law enforcement to allow for recovery of fish stocks. Jahson learned the importance of protecting crucial marine habitats that serve as important spawning or feeding grounds and the corridors that connect the ecosystems that fish move through.

When he returned home in October 2008, Jahson moved to Tobago to start working on the coral reefs of his home country. He worked for the Buccoo Reef Trust for a year as the assistant project coordinator. At the time the Trust was the only NGO in Tobago with an interest in the preservation and conservation of coral reefs.  

He was returning to the reefs where he had learned to dive just four years before. Even within this short time frame, reefs at some favourite dive sites – Mt. Irvine and parts of Speyside – were changing showing considerable coral loss and disease. Unfortunately, there was little record of the degradation or research into the causes. Moving forward, and recognising the paucity of data on Tobago’s marine environment, Jahson joined the Institute of Marine Affairs as the coral reef research officer. He set about establishing a comprehensive monitoring and research programme for the marine environment all around Tobago. He was also instrumental in the development of a Coral Bleaching Response Plan for Tobago and the establishment of two monitoring stations called Coral Reef Early Warning Systems (CREWS) at Buccoo and Angel Reef, Speyside. The monitoring stations collect near real time atmospheric and oceanic data – ocean temperature, wind, rain, pH and even algal levels –as part of the National Oceanic and Atmospheric Administration’s (NOAA) Coral Health and Monitoring Program. The oceanographic data of Tobago is stored and may be accessed at an online repository for data from coral reefs all around the world. This data feeds into models that can be used to predict when bleaching events are expected to happen (see below for the link to the website).
Jahson carries out underwater reef monitoring. Photo by Jonathan Gomez
Jahson is now working towards his PhD. He is looking at the role of coral reefs in coastal zone planning. Apart from the biological significance of coral reefs for tourism, food security and enjoyment, Jahson believes it is important to “safeguard one of the most important ecosystems to island states. Through rigorous and empirical research he hopes to demonstrate the role of shoreline protection/ coastal erosion abatement potential of coastal ecosystems in coastal zone planning.” Such considerations should be included in the cost-benefit analyses associated with the evaluation of coastal development or alternative coastal management scenarios. We'd be in a better place if this was the case, since the decisions that affect these ecosystems, will ultimately influence our quality of life on the island.

Jahson works towards creating synergy between economic development and environmental conservation that will benefit communities and their natural environment. When asked if he believes coral reefs have a future, given all the woes they are facing, Jahson considers himself a coral reef optimist. “Coral reefs have been around for thousands of years and likely to be around for a bit longer. Given global trends and what's expected to happen over the next 50-100 years, our reefs might change - we might lose some species, new reefs may start and older ones may fade. We don't know how they will change. Ultimately, they're having a hard time right now, due to warming oceans, fishing impacts, physical damage, sediment and other natural impacts that come from storms and hurricanes. Their future really depends on what we’re willing to do for them now.”

If you are interested in learning more about Jahson’s research or getting started in the field of marine biology and conservation, you can email him at, and follow him on twitter: @jahson_alemu. Find out more about NOAA’s Coral Health and Monitoring Program (CHAMP) here:


  1. Scientists, led by the late Professor Julian S.Kenny have been attempting to convince the politicians and decision makers that there is dire need of proper management of the Coral Reefs of Tobago but without success. To the best of my knowledge there is still no zoning of activities at any of the Tobago reefs.
    Maybe one day our politicians will become aware of the need to protect the reefs and their inhabitants.
    Many of the islands up north have established Marine Parks which are regularly patrolled to ensure that there are no illegal activities including spear fishing ,the taking of conchs ,lobsters etc within the protected areas. I am aware that a permit is required to enter certain marine areas in the Bahamas in order to create a sanctuary are for lobsters and conch. When will that ever happen in Tobago where there is no Closed Season for the taking of conch and lobsters etc.etc. Our Fisheries Laws are nearly 100 years old.
    Ian Lambie

  2. Wake-Up people and lets keep all projects on stream.


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