1. Northern Elephant Seal (Mirounga angustirostris):
- Mating season: December to February
- Location: Año Nuevo State Park, California (main breeding colony), and Guadalupe Island, Mexico
2. Southern Elephant Seal (Mirounga leonina):
- Mating season: August to October
- Location: Subantarctic islands, including South Georgia and the Falkland Islands
3. California Sea Lion (Zalophus californianus):
- Mating season: May to July
- Location: Channel Islands, California (main breeding colony), and other coastal areas in the eastern North Pacific
4. Steller Sea Lion (Eumetopias jubatus):
- Mating season: May to July
- Location: Rookeries in Alaska, the Aleutian Islands, British Columbia, and parts of Russia
5. Gray Seal (Halichoerus grypus):
- Mating season: September to December
- Location: Coastal regions of the North Atlantic Ocean, including the British Isles, Scandinavia, and Canada
6. Harbor Seal (Phoca vitulina):
- Mating season: May to July
- Location: Coastal waters around the world, including the Pacific, Atlantic, and Arctic Oceans
It's important to note that these mating seasons are approximate and can vary slightly from year to year due to environmental factors and population dynamics.