That’s the name of a British research vessel, built in 1764. The HMS Endeavour explored uncharted oceans in the South Pacific.
The Little Plastic Bears long for the sea in the Endeavor.
But the tide didn’t come in.
The ts Endeavor (toy ship Endeavor) piloted by Little Plastic Bears never made it to sea, despite her best effort to summon the waves.
NOTE: If you would like to purchase a print of that photo, it is listed here on 500px.