When an underwater volcano in Tonga erupted violently in mid-January, it generated something that scientists hadn’t seen in more than half a century: a shockwave in the atmosphere. The wave circled Earth for days. Scientists will be studying it for years. https://nyti.ms/3xvklVp | The New York Times

35K views · 129 reactions | Scientists have captured rare underwater footage showing remoras, or sucker fish, attached to humpback whales off Australia’s coast. The fish use suction-like discs on their heads to cling to the massive whales, feeding on sea lice and dead skin while travelling effortlessly through the ocean. #remoras | #underwaterfootage | #humpbackwhale | #Australia | #RepublicWorld | Republic | Facebook