'Cookie cutter': mystery of strange holes on tuna caught in Australia solved (photo)

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Professional fisherman and guide Jason Moyes, who goes by the alias Trapman Bermagui, has caught a strangely marked tuna off the Australian coast. He posted a photo of his find on Facebook.

“Serious cookie-cutter bites on this tuna,” the user captioned his post, hinting at a cookie-cutter shark.

< p>“It could very well be bite marks from a cutter shark,” said Ingrid Visser, a biologist and senior researcher at New Zealand's Orca Research Trust. -55 cm. In search of food at night, these inhabitants of the ocean depths rise closer to the surface. They migrate daily in this way and swim for about three kilometers, after which they again sink to the bottom.

According to scientist Mark Grace, unlike squid or lamprey bites, the bite mark of a cutter shark is round, regular in shape and deep enough.

< p>According to the Australian Museum, cutter sharks attach themselves to the prey with their mouths, and then begin to rotate, and with the help of sharp teeth they cut a piece of flesh from the fish.

Apparently, several cutter sharks. Probably, as with any creature with a nervous system, it was painful damage. Fish often become easy prey for cutter sharks when hooked and unable to escape.