The amount of fish harvested in the world is more than that of cattle, sheep, poultry or eggs.
Fish is the biggest source of wild or domestic protein in the world.
The blue whale's blood vessels are so big that a full grown trout could swim through them to its heart, which is the size of a small car. Green turtles can migrate more than 1400 miles to lay their eggs. A group of herrings is called a siege. A group of jelly fish is called a smack. The blue fin tuna is one of the largest and fastest marine fish.