Orca teeth have growth rings! Growth speeds change by season, creating layers like tree rings every year. Counting them reveals their age. However, these layers blur over time, making it hard to tell the age for orcas over 20.
One of the biggest mysteries to me is that orcas are the most efficient predators on Earth, yet they’ve never hunted humans in the wild. Maybe they know something we don’t
A rare and unforgettable sight: a pod of Indo-Pacific humpback dolphins traveling together. Seeing a group of these vibrant pink dolphins completely captivated everyone on board. The ocean never ceases to amaze. 🐬💕
【Orcas' Lungs: Natural Oxygen Tanks】
Orcas replace about 90% of the air in their lungs in one breath! (Humans: 10-15%). This helps them dive for a long time. With thick airways, they swap huge amounts of air instantly. Their breathing sounds at aquariums are so powerful!
The Whale Who Punched In for Work Every Winter.
For nearly forty years, a killer whale named Old Tom showed up to Twofold Bay in Eden, Australia, like he was clocking into a shift. His job: herd migrating baleen whales into the bay and alert human whalers by slapping his tail at the mouth of the Kiah River. The whalers would row out, and the hunt would begin, orcas and humans working side by side.
The arrangement had a name. The "Law of the Tongue" was a deal between species: the orcas helped make the kill, and in return, the whalers left the lips and tongue of the baleen whale for the pod. No one signed a contract. It just worked, season after season, starting in the 1860s. The Yuin people of the region had an even older spiritual relationship with the orcas, and their presence on the whaling crews ensured the killer whales were never harmed.
Old Tom was the leader, 22 feet long, six tons, unmistakable. He'd breach and circle the bay entrance whenever a target whale appeared, essentially flagging down his human coworkers. Whalers came to depend on him so completely that they'd wait for his signal before launching boats.
On September 17, 1930, Old Tom's body was found floating in the bay. His skeleton revealed worn-down teeth from years of tugging ropes alongside the boats. He'd literally worked himself to the bone. His remains are still on display at the Eden Killer Whale Museum.
History's most reliable employee wasn't even the right species for the job.