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Amazon Drought Kills Over 100 Pink Dolphins

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In a heartbreaking turn of events, the serene waters of the Amazon River have become a graveyard for the magnificent pink and grey dolphins that call it home. With the scorching sun beating down, 120 river dolphins have met their untimely demise in the past week. But what’s causing this tragic loss? Dive into the depths of this ecological crisis with us as we explore the links between the deaths of these Amazonian treasures, severe drought, and soaring temperatures.

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Unprecedented Tragedy Strikes

Picture this: the Amazon River, known for its lush biodiversity and breathtaking scenery, now witnesses a grim spectacle. Over the course of a week, 120 river dolphins, known locally as “boto,” have been discovered floating lifeless in one of its tributaries. This alarming discovery sends shockwaves through the scientific community and environmental activists alike.

The Mamiraua Institute’s Disturbing Findings

Brazil’s Ministry of Science, Technology, and Innovation, represented by the Mamiraua Institute, is at the forefront of unraveling this catastrophe. Recently, two additional dolphin carcasses were found in the vicinity of Tefe Lake, adding to the already grim tally. But what could have caused such a devastating loss to these captivating creatures?

A Searing Mystery Unfolds

Experts on the case suspect that the prime culprits are none other than severe drought and relentless heat. Temperature records reveal that, over the past week, the mercury has soared to an astonishing 39°C (102°F) in the Tefe Lake region. To make matters worse, thousands of fish have also perished under these harsh conditions, as reported by local media.

Miriam Marmontel, a dedicated researcher at the Mamiraua Institute, solemnly shares her findings, “We have documented 120 carcasses in the last week.” It’s a gut-wrenching reality that many of these fatalities are the beloved pink dolphins, or “boto,” in Brazil’s native tongue. These pink wonders could potentially constitute a staggering 10 percent of their population in Lake Tefe.

Threat to the Pink and Grey Dolphins

Now, let’s take a moment to understand just how significant this loss is. The Amazon river dolphins, with their striking pink hue, are a unique freshwater species found exclusively in the rivers of South America. They represent one of the few remaining freshwater dolphin species on our planet. Their slow reproductive cycles have always made them vulnerable, but the recent events have pushed them to the brink.

Marmontel, with a hint of desperation in her voice, says, “Ten percent is a very high percentage of loss, and the possibility that it will increase could threaten the survival of the species in Lake Tefe.” The consequences of this tragedy extend beyond the pink dolphins alone. The grey river dolphins, known as “tucuxi,” are also on the International Union for Conservation of Nature’s red list of threatened species.

@Ramon and Suzanne Vargas

Conservation Efforts in Overdrive

In the face of this ecological crisis, Brazil’s Chico Mendes Institute for Biodiversity Conservation has sprung into action. They’ve dispatched a team of veterinarians and aquatic mammal experts to rescue any surviving dolphins stranded in the lake. Every effort is being made to save these creatures, and time is of the essence.

Mystery Lingers, Climate Change Suspected

While the possibility of drought and heat causing this surge in dolphin mortality looms large, scientists remain cautious. They are diligently working to rule out other potential causes, such as a bacterial infection that could have ravaged these dolphins. But one undeniable fact remains—late last week, when the temperature of Lake Tefe’s water spiked to a sweltering 39°C, over 70 carcasses surfaced. That’s more than 10 degrees higher than the average for this time of the year.

To add to the concern, the water temperature dropped briefly but surged again on Sunday to 37°C (99°F). It’s a clear signal that something is amiss in these aquatic ecosystems, and the scientific community is leaving no stone unturned to unravel the mystery.

Climate Change: A Culprit?

Environmental activists, armed with the evidence of rising temperatures, have pointed fingers at climate change. They argue that climate change exacerbates droughts and heatwaves, making them more frequent and severe. It’s a sobering reminder of how our actions, or inactions, impact the delicate balance of nature.


As we bid farewell to these 120 Amazon dolphins, we’re left with a lingering sense of urgency. Their tragic deaths serve as a poignant reminder of the dire consequences of climate change and environmental neglect. While scientists continue to investigate the exact cause, the specter of climate change looms large. It’s high time we all join hands to protect our planet and the magnificent creatures that call it home, before it’s too late.

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