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Scientists determined the alga, which they named Chondria tumulosa, didn’t match any known species, Dr. Sherwood said.

Researchers studied the seaweed’s DNA to try to determine its origin but concluded it’s a new species of red algae they named Chondria tumulosa.

The finding could help scientists understand how exercise staves off age- and disease-related declines in brain function, because neurons naturally lose mito­chondria as we age, Davis explains.

The Chylocladiæ are curiously jointed plants, removed by Agardh to a new genus, Lomentaria, and a new order Chondriæ.