12-foot shark swims into Florida marina: officials

Marine specialists currently are in a Florida lake assessing a 12-foot mako shark that was spotted Friday.

'Dinosaur highway' unearthed in England, dating back 166 million years

A worker's discovery of nearly 200 dinosaur tracks in a limestone quarry in Oxfordshire, England, has unveiled a 166-million-year-old "dinosaur highway."

Orca Tahlequah seen pushing second dead calf in WA waters

Southern resident orca Tahlequah is suffering the loss of yet another calf. Here's where she and her deceased calf have been spotted.

Grieving orca who carried dead calf in 2018 now seen with newborn

An orca that captured the world’s attention in 2018 after she carried her dead newborn calf for weeks appears to be a new mother again, bringing a sign of hope to researchers.

PHOTOS: Georgia Aquarium helping 8 stranded loggerhead sea turtles

On Thursday, Georgia Aquarium welcomed 8 loggerhead sea turtles in need of a temporary home for rehabilitation after being stranded.

Monarch butterfly: Should they be given federal protections?

Depending on where they live in the U.S., some monarch butterfly populations could face extinction by 2080 if they aren’t extended federal protections, one expert said.

World's oldest known wild bird lays egg at 74 years old

The U.S. Fish and Wildlife Service's Pacific region says the 74-year-old Laysan albatross returned to the Midway Atoll National Wildlife Refuge in late November to lay an egg.

New monster tarantula species is 'hairy giant among dwarves'

Biologists have discovered a new tarantula species in Cuba that is bigger and hairier than other spiders in its genus.