ICYMI: There’s a new species of shark roaming the waters of the world – and it’s a “demon” with bright white eyes. 👀 sharkweek
A mysterious egg led researchers to discover a new species of shark, according to a recent scientific paper. they had identified a new species of deepwater catshark, called . The shark is from northwestern Australia and was identified because of unique egg cases found in an Australian museum in 2011.
Two other identical egg cases were recently found in the Australian National Fish Collection. A dead female shark carrying the same egg case was also found in storage. It had been incorrectly labeled when found in 1992, but the egg case found inside it matched the unusual characteristics of the other egg cases.
A lateral view of the Apristurus ovicorrugatus. The first is a fresh sample, while the second is preserved. The egg cases have strong T-shaped ridges, the paper's authors said. The unique markings resembled multiple other species, but none of the characteristics fully matched existing shark egg cases. One of the recently found egg cases contained what researchers described as a well-preserved, late-term shark embryo.
Scientists used multiple methods, including molecular analysis, to identify the species. Researchers named the after the corrugated egg cases that led them to the discovery. That corrugated design is unique to the species, since other egg cases laid by sharks in thecategory do not have such markings. It's unclear why the design has developed, but researchers suggested that possible benefits could include helping the embryo develop or strengthening the egg case against shock.
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