Read this thesis statement. The gray whales' annual journey from the frigid waters of the northern Pacific to the warm lagoons near Baja California, Mexico, is one of the most remarkable migrations of any species on the planet. Which piece of information, gathered from research, best supports this thesis statement? Traveling in pods, or groups, the gray whales' round-trip from Alaska to Mexico covers about 12,430 miles. Once close to extinction from extensive hunting, gray whales are now protected by international law. Gray whales use a comb-like strainer in their upper jaw to filter the food they forage off the seafloor. The gray whale is a baleen whale that measures 40 to 50 feet and can weigh between 30 and 40 tons.