Yesterday, we posted about Poseidon’s ribbon weed, Posidonia australis, a clonal seagrass. Researchers recently discovered large meadows of the self-cloning sea grass growing in Shark Bay, off the westernmost tip of Australia. DNA testing of the seagrass, covering over 180km, an area three times the size of Manhattan, established that the meadows were made up of a single plant, making the self-cloning seagrass the largest single plant in the world.
The post brought to mind a similar story about clonal sea grass from a decade ago involving a related species, Posidonia oceanica, known as Neptune grass, that is believed to be the oldest living thing on the planet.
Australian researchers were performing a genetic survey of Poseidon’s ribbon weed (
Congratulations to 
On May 27, 2022, Australian solo sailor 
The first 
As the Russian invasion of Ukraine grinds to a bloody stalemate, the Russian navy is effectively blockading the northern Black Sea, cutting off maritime trade at Ukrainian ports, in what world leaders call 
On Monday, the US Navy released the 
“Social distancing” during an outbreak of a contagious disease is difficult for dolphins as well as for humans. Researchers are now investigating how dolphin social interactions may help spread the virus that has resulted in significant dolphin strandings and die-offs in recent years. 
Andrew Bedwell hopes to set a new world record for sailing the smallest boat to cross the Atlantic. His vessel, Big C is just over 1m/3.2ft long. If all goes according to plan he will set off in May 2023 from St Johns, Newfoundland, and finish off Lizard Point in Cornwall.
U.S. Secretary of the Navy 
The museum ship, the retired United States Navy 
In January, we 
Skywatchers in portions of the Americas, Antarctica, Europe, Africa, and the East Pacific will see a 
Ship strikes — collisions between ships and large marine life — are a serious threat to whales and other large marine creatures. According to the non-profit 
We recently posted about the 
In early March we posted