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The largest and strongest embryos consume their siblings in the womb (intrauterine cannibalism) before each surviving pup is born. [6] It has one of the lowest reproduction rates of all sharks and is susceptible to even minimal population pressure , so it is listed as vulnerable and is protected in much of its range.
Siblicide (attributed by behavioural ecologist Doug Mock to Barbara M. Braun) is the killing of an infant individual by its close relatives (full or half siblings). It may occur directly between siblings or be mediated by the parents, and is driven by the direct fitness benefits to the perpetrator and sometimes its parents.
Child cannibalism or fetal cannibalism is the act of eating a child or fetus. Children who are eaten or at risk of being eaten are a recurrent topic in myths, legends, and folktales from many parts of the world.
This is a list of incidents of cannibalism, or anthropophagy, the consumption of human flesh or internal organs by other human beings. Accounts of human cannibalism date back as far as prehistoric times, and some anthropologists suggest that cannibalism was common in human societies as early as the Paleolithic. Historically, various peoples and ...
On Nov. 20, 1820, a whaling ship from Nantucket, Mass., was attacked by a large sperm whale in the middle of the Pacific Ocean. According to the Nantucket Historical Association, the boat was ...
They estimated the individual died at 46 years of age, with a growth rate of 16 cm (6.3 in) per year, and a length of 2 m (6 ft 7 in) at birth. For a 15 m (49 ft) individual – which they considered to have been the maximum size attainable – this would equate to a lifespan of 88 to 100 years. [ 79 ]
Just weeks before a pregnant porbeagle shark was expected to give birth, one of the two tracker tags marine scientists had placed on the animal floated to the surface near Bermuda. The team hadn ...
A female shark has hatched an egg without it being fertilised by a male, a zoo in Illinois has said. Brookfield Zoo said the hatching of an epaulette shark pup was not unusual, but the way in ...