North Atlantic:
- Summer: Blue sharks migrate to cooler northern waters, such as off the coast of New England and the Canadian Maritimes.
- Winter: They move south, to warmer waters off the coast of Florida, the Gulf of Mexico, and the Caribbean.
South Atlantic:
- Summer: Blue sharks migrate towards the equator and can be found off the coast of Brazil and Argentina.
- Winter: They shift back south to waters around South Africa and Namibia.
North Pacific:
- Summer: Blue sharks move north towards the cooler waters off the coast of Alaska and the Bering Sea.
- Winter: They migrate south to the warmer waters of California and Baja California.
South Pacific:
- Summer: Blue sharks can be found in the western Pacific Ocean, near Australia and New Zealand.
- Winter: They migrate east, towards the warmer waters off the coast of South America.
Indian Ocean:
- Blue sharks are found throughout the Indian Ocean, but their movements are less pronounced compared to other regions. They tend to stay in tropical and subtropical waters.
Overall, blue sharks are highly migratory species that move in response to changes in water temperature, food availability, and breeding grounds. They can cover extensive distances during their migrations.