This turtle was found in Port Lome, N.S., in 2017. (Submitted by Canadian Sea Turtle Network) The water temperatures are getting colder, and for sea turtles, this could be bad news.

Good luck, persistence and international co-operation has delivered a rare trove of data from two endangered leatherback turtles, Ruby and Isabel, that were tagged off Nova Scotia last summer.

The data Mansfield's team collected revealed that in just a few months, the turtles traveled more than 1,000 miles, swimming between relatively shallow waters closer to shore and the deep open ...