SMBook Leedsichthys
Vital statistics
Attributes Large size, has over 40,000 teeth
Diet Plankton and other microbes
Fossil finds England
Temporal fossil range Jurassic
165 to 155mya
Other names
Production information
Notable individuals
TV appearances Sea Monsters: To Hell and Back?
Book appearances

Leedsichthys was a large fish from the Jurassic. It was the largest fish ever to live.

Physical appearance and traitsEdit

Behaviour and traitsEdit

Leedsichthys was around the size of a blue whale, making it the largest fish of all time. Despite its daunting size, Leedsichthys was a gentle giant with a simple lifestyle. It swam close to the ocean's surface, taking in mouthfuls of water filled with plankton, tiny shrimps, jellyfish and small fish, which it sieved through the mesh plates at the back of its mouth. The plates were made from tens of thousands of fine teeth.

Leedsichthys traveled to parts of the world where nutrient-rich, deep-sea currents would rise to the ocean surface. The excess of nutrients in these currents would feed the plankton, which would become so plentiful that it formed a dense, organic soup. Such a large amount of plankton would attract shoals of Leedsichthys intent of gorging themselves. Such feasts could last for weeks, after which a large animal like Leedsichthys would be able to survive for several more weeks without feeding. During this time, it would shed the filter plates at the back of its mouth and would wait while new ones grew back.

Leedsichthys, despite their size, were not completely safe from predators. It had no means of defending itself against large and persistent attackers. Leedsichthys could be attacked by animals like Metriorhynchus, Hybodus and particularly Liopleurodon.

In Sea MonstersEdit

The Second Deadliest Sea EverEdit

Nigel Marven swam with a shoal of Leedsichthys. He then noticed that one individual wasn't doing so well. As the rest of the shoal overtook it, a Hybodus and a Metriorhynchus.

Later, the Leedsichthys died and its carcass was fed upon by a Liopleurodon. Later, during the night, a group of Liopleurodon feasted on the carcass.

Behind the scenesEdit

List of appearancesEdit

Notes and referencesEdit

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