Transcript (en)

Hey guys, so we're here in this incredible river system in Thailand. I'm with my good friend Dr. Ning. She's a veterinarian. She has this really remarkable study unraveling the mysteries of the largest species of freshwater fish in the planet. This is a giant freshwater stingray. It is 14 feet long. It's 8 feet wide. It weighs probably 800 pounds. And she's done all this cool stuff with it. We have genetic samples. We've got the measurements. We put in identification. tracking device so we know where she goes. But the best news about this stingray is we found out that she's pregnant. And that's great news for this species and for its future. By the way, why do they call them stingrays? Because of this. This is its defense. It has this very barbarous, potentially lethal defense. Only defense, not offense. And it's the spine. It's got venom. It It can be up to 15 inches long and you certainly don't want to get nailed by it. But for the most part they are a gentle giant and they tell the story of this incredible exotic place, Thailand.