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- How Whales Work
- How Sharks Work
- How Bats Work
- Do whales and dolphins sleep?
- How do fish rise and sink in the water?
- How do sea monkeys work?
- Marine Mammal Quiz
Gnu, or Wildebeest is an African antelope. An adult gnu stands about four feet (1.2 m) high at the shoulder and weighs 300 to 500 pounds (135 to 225 kg).
Siamese fighting fish is a tropical freshwater fish of Thailand (formerly Siam). It is one of a group of tropical fish called bettas.