29 million tons of plastic flows into Indonesian seas every year
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29 million tons of plastic flows into Indonesian seas every year
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29 million tons of plastic flows into Indonesian seas every year
In this episode, we follow how a student diver turned systematic observer as she confronts an overwhelming national plastic figure. We trace her early dives, the methods she and two friends developed to record submerged debris, and the choices that shaped their approach - but what questions did that counting raise about scale and response?
Person: Swietenia Puspa Lestari (Tenia)
Date: first systematic dives in 2015; graduated 2017
Location: Pulau Pramuka, Thousand Islands, Java Sea
Topic: underwater plastic debris counting and cleanup methods
Statistic: 1.29 million tons of plastic entering Indonesian waters annually
- At age 20 she and two friends dove not to remove trash but to document it with waterproof slates and mapped locations.
- She built a counting system before organizing any funding, partners, or formal group identity.
- The decision to record embedded debris first became the guiding principle for later actions and methodologies.
- Divers faced shifting currents and the risk of damaging coral when extracting plastic, making precision essential.
- The large national estimates (1.29 million tons/year) framed the scale she confronted and the need for data from below the surface.
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