Cancer should be a near certainty for whales, being the longest-living and largest mammals there are. Across species, the higher the number of cells, the greater the number of cell divisions and the higher the probability of DNA damage and the transformation of a normal cell into a cancerous one.
However, the occurrence of cancer does not show a correlation with body mass. The lack of correlation between body mass and cancer risk is known as Peto’s paradox.
The new Nitrox and trimix capable Sirius watch-style dive computer aim to combine technology and elegance perfectly, writes Mares.
Scientists with the New England Aquarium found that nurse sharks, Ginglymostoma cirratum, returned to the waters off the Dry Tortugas, 70 miles (113km) from Key West, to mate for up to 28 years. The Dry Tortugas has been known as a courtship and mating site for nurse sharks since 1895.
A 30-year (1992–2021) study documented long-term site fidelity to this area, with data from 137 adult sharks.
American artist Nate Wilson creates beautiful and enchanting watercolor paintings of marine life with great attention to the unique characteristics of each species. X-Ray Mag interviewed the artist to find out more about his artwork and creative perspectives.
