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Batomorphi is a clade of cartilaginous fishes, commonly known as rays, this taxon is also known as the superorder Batoidea, but the 5th edition of Fishes of the World classifies it as the division Batomorphi. [2] They and their close relatives, the sharks, compose the subclass Elasmobranchii. Rays are the largest group of cartilaginous fishes ...
Having the ability to keep their warmth helps them as predators as well. Another group of sharks, known as the mackerel sharks are able to warm their blood. These mackerel sharks retain their blood by using a heat exchange system called rete mirabile. The body temperature of mackerel sharks can be up to 10 o higher than the surrounding water. [10]
Porbeagle shark was eaten by a warm-blooded predator, team says. Sulikowski said the team put two different tags on their subject sharks. The first tag, called a finmount tag, is located on the ...
Without their fins, sharks wouldn’t be able to stay the right way up. They’d roll over in the water. Most sharks never close their eyes. Some have special see-through eyelids that protect their eyes without cutting out light. Others just roll their eyes up into their head to protect them. Although sharks can hear sound, they rarely make a ...
Most of the sharks spotted in the area are juveniles — despite their size, the great whites are only up to about 6 years old and very inexperienced hunters.
Unlike most sharks and other vertebrates, which have hard tissues like spines that form growth rings (much like the rings inside a tree trunk), Greenland sharks lack these structures, making age ...
The World Today, styled also as The World Today with Maryam Moshiri is a news programme that premiered on both UK feed and international feed of BBC News channel on 21 February 2024. The programme is mainly hosted by Maryam Moshiri. The show, dedicated to international news is said to "bring the best of the BBC's global journalism to audiences ...
Scientists fixed tags equipped with cameras onto tiger sharks so that they could view the ocean floor from a new perspective. ... what is the world’s largest known seagrass ecosystem, an area of ...