1. Lampreys lack scales and gill covers, breathing through 7 openings. 2. Lampreys are primitive fish not eels. 3. Lampreys are parasites with around 150 teeth and a rough tongue used for drilling a hole through flesh. 4. Lampreys prefer to latch onto a fish closest to the heart and drink their body fluids. 5. Lampreys have poor vision and rely on their sense of smell to find prey. 6. The Ukrainian migratory lamprey is the only extinct lamprey, but little is known about this species. 7. Each female lamprey lays 100,000. 10,000 will hatch. 8. The Greek Brook lamprey is critically endangered. 9. Niagara Falls was once a natural barrier keeping the now invasive sea lamprey from entering the Great Lakes. 10. Lampreys do not seem to seek out human blood even though some movies and shows depict this. 11. On December 1, 1135 King Henry I died from lamprey poisoning, from eating too many at once. According to Oregon.gov, a person should only eat 2 - 4 servings of lamprey per month.