The video is about Coyote Peterson's experiment to see how 1,000 sea lamprey would react to him in a dunk tank. Sea lamprey are parasitic fish that attach to and feed on the blood of other fish. The experiment aims to test the effectiveness of an alarm cue pheromone in repelling the sea lamprey.
Initially, Coyote tries to get bitten by the sea lamprey by putting his hands in a tank with them, but they show no interest in attacking him. He then introduces the alarm cue pheromone into the tank, which causes the sea lamprey to become aggressive and swarm around the aquarium.
Coyote then prepares to enter the dunk tank filled with 1,000 sea lamprey, wearing a life preserver and a dive mask. As he is lowered into the tank, the sea lamprey attack him, biting his legs and arms. However, they eventually calm down and lose interest in attacking him, suggesting that they have no intention of eating humans.
The experiment shows that the alarm cue pheromone is effective in repelling sea lamprey, and could potentially be used to control their populations in the Great Lakes. The video ends with Coyote concluding that sea lamprey are not interested in eating humans, but are rather alien-looking creatures that are a nightmare for fish.
Here are the key facts extracted from the text:
1. Sea lamprey are parasitic creatures that feed on the blood of other animals.
2. They have a suction cup mouth with razor-sharp teeth.
3. Sea lamprey are found in the Great Lakes.
4. Scientists have discovered an alarm cue pheromone that can disrupt the spawning activity of sea lamprey.
5. The pheromone is released by sea lamprey when they are injured or dying.
6. The pheromone causes other sea lamprey to flee the area.
7. Sea lamprey have a highly developed sense of smell.
8. They can detect the pheromone and respond to it.
9. The alarm cue pheromone can be used to control sea lamprey populations.
10. Sea lamprey were originally found in the Atlantic Ocean but invaded the Great Lakes through man-made shipping canals in the 1800s.
11. The Great Lakes Fishery Commission and the US Geological Survey are working together to control sea lamprey populations.
12. Sea lamprey populations have declined by 90% due to conservation efforts.
13. The decline in sea lamprey populations has resulted in healthier Great Lakes ecosystems.