‘Incredibly rare’ shark birth caught on video at Australia aquarium. See ‘mighty’ pup
Months after endangered gray nurse shark Mary-Lou was seen participating in mating activities in an Australia aquarium, the ocean predator welcomed a “surprise” pup, the aquarium announced.
The “extraordinarily rare event” was captured on video by the aquarium team during a routine check of the Shark Valley exhibit, according to a March 13 news release from Sea Life Sydney.
“In a jaw-dropping moment of marine history, Sea Life Sydney Aquarium has announced the rare arrival of a baby gray nurse shark!” aquarium officials said. “The tiny yet mighty male pup, affectionately named Archie by the aquarists, marks a world-first for Sea Life Sydney, capturing hearts and making waves in marine conservation.”
The aquarium shared a Facebook video announcing the birth on March 13, but the birth took place on Nov. 15, the aquarium said.
At 4 months old, Archie is now just under 2.5 feet long and has spent his entire life in special nursery pools where he can grow to a size that is safe to be reintroduced to the gray nurse shark habitat, the aquarium said.
Gray nurse shark pups can grow as much as 11 inches per year, reaching a total length of about 10 feet in their lifetime, according to the aquarium.
“To witness the birth of an endangered gray nurse shark is incredibly rare, and being able to capture it on video makes it even more special,” Ben Buchanan, head of curatorial at the aquarium, said in the release. “While we would love to introduce Archie to our guests, his health and development remain our top priority. He will continue to be cared for in our behind-the-scenes nursery until he reaches approximately (5 feet) in length, at which point he will be better suited to join the five adult gray nurse sharks in Shark Valley.”
While it’s clear Mary-Lou is Archie’s mother, his paternal side is a bit more of a mystery.
There are three male sharks in Shark Valley named Murdoch, Trio and Napoleon, and any of them could be Archie’s father, the aquarium said.
Mary-Lou participated in courting during the spring mating season (beginning in September in Australia), receiving bites from the males and being flipped upside down, according to a Sept. 23 video from the aquarium.
When Archie is older, his DNA will be compared to the adult males to determine parenthood, the aquarium said.
“Gray nurse sharks are currently listed as critically endangered across New South Wales, facing significant threats from overfishing and habitat destruction,” the aquarium said. “Beyond their awe-inspiring presence, these magnificent creatures play a crucial role in marine ecosystems.”
Sydney is in southeastern Australia.
This story was originally published March 14, 2025 at 9:03 AM with the headline "‘Incredibly rare’ shark birth caught on video at Australia aquarium. See ‘mighty’ pup."
