November 23 Archaeologists retrieve first treasure items from $20B 'Holy Grail' shipwreck off Colombia Colombia has recovered the first artifacts from San José galleon, also known as the legendary "Holy Grail of shipwrecks." It is said to contain $20 billion worth of treasure.
November 20 False alarm triggers brief rescue operation aboard Carnival Radiance off Mexico coast The Carnival Radiance turned back near Ensenada, Mexico, after reports of a possible person overboard, prompting a rescue operation Thursday.
November 18 Massive underwater ruins could be evidence of Plato's lost Atlantis, researcher insists Independent researchers led by Michael Donnellan claim to have discovered ancient ruins on Spain's Salmedina Island that could be Plato's lost city of Atlantis.
November 7 Coast Guard swoops in to save stranded sailors from sinking boat hundreds of miles off coast Coast Guard crews rescued five sailors from a sinking sailboat 260 nautical miles off North Carolina's coast after the vessel took on water near Cape Hatteras Thursday.
October 22 Baby humpback whale meets tragic end off New Jersey coast in suspected propeller strike Marine Mammal Stranding Center reports that a 29-foot young humpback whale succumbed to propeller strike wounds while trapped off New Jersey coast.
October 22 Thousands of mysterious sea creatures 'littering' coastal town: See the photos Thousands of sea cucumbers blanket over two miles of the Seaside, Oregon, beach in a rare natural phenomenon. The translucent creatures can't return to the ocean on their own.
October 19 Scientists solve centuries-old mystery of how Easter Island's massive Moai statues got there Scientists recently confirmed Rapa Nui legends about Moai heads "walking" to their locations, using 3D modeling to prove vertical transport methods on Easter Island.
October 16 OceanGate Titan submersible damaged on multiple dives before catastrophic implosion, NTSB report finds A scathing new report on the cause of the Titan sub disaster found that the vessel was damaged on earlier dives and built with flawed engineering.
October 6 Mystery solved? Researcher challenges long-held theory of what sank Shackleton's Endurance in Antarctic ice A Finnish professor's recent research shows Sir Ernest Shackleton's legendary ship Endurance was poorly designed for Antarctic conditions, despite its indestructible reputation.
September 25 Surge of rare jellyfish sightings across multiple beaches stumps experts A moon jellyfish bloom in the Gulf of America is driving record numbers of pink meanie jellyfish to Texas shores, where they feed aggressively on their prey.