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Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment. Only about 100 of the 12,000 extant reptile species and subspecies are classed as marine reptiles, including marine iguanas , sea snakes , sea turtles and saltwater crocodiles .
Of the total 185 million tonnes of aquatic animals produced in 2022, about 164.6 million tonnes (89%) were destined for human consumption, equivalent to an estimated 20.7 kg per capita. The remaining 20.8 million tonnes were destined for non-food uses, to produce mainly fishmeal and fish oil.
Following is a list of marine reptiles, reptiles which are adapted to life in marine or brackish environments. This list is incomplete ; you can help by adding missing items . ( August 2008 )
Uncovering the history of marine reptiles is crucial to understanding ancient ocean ecosystems because the creatures filled various niches and shaped ocean food chains, Perillo said, creating ...
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Restoration of Mosasaurus hoffmannii, an extinct marine lizard.. Squamata is the largest order of reptiles, comprising lizards, snakes, and amphisbaenians (worm lizards). There are many examples of aquatic squamates, both living and extinct; a secondarily aquatic lifestyle has evolved multiple times.
Increased ocean traffic causes collisions between fast ocean vessels and large marine mammals. Habitat degradation also threatens marine mammals and their ability to find and catch food. Noise pollution, for example, may adversely affect echolocating mammals, and the ongoing effects of global warming degrade Arctic environments.
Researcher Dr Roy Smith said stomach contents were the "smoking gun" evidence for the diets.