After combing the mangroves covering the Marabella waterfront, Southern Division police found $100,000 worth of "lemon cush" hidden under galvanize sheets.
The find came as police were searching the area after learning of a shipment of drugs and firearms that came into the well known crime area recently.
Over the past few years, Bayshore Avenue, commonly known as the "Old Marabella Train Line" has been used as a port for the trade of firearms and drugs from Venezuela.
The operation coordinated by Snr Supt Irwin Hackshaw and executed by ASP Rawl Ramdeo, Insp Don Gajadhar, Sgt Dale Ramroop and Sgt Inshan Teeluck saw task force and CID officers entering the community from various entrances around 8 am.
With air support from the National Operations Centre, the officers searched several kilometers of shore, during which they found 2.5 kilogrammes of the marijuana in two plastic bags.
Officers said the "high grade" marijuana usually sells for $40,000 per kilogramme on the streets. Several areas were dug in the search, which is expected to continue tomorrow.
No arrests were made. Investigations continue.