Final answer:
The Antimeridian passing through mostly ocean prevents control by a single country, avoids timekeeping disruptions, and allows for easier access via boat.
Step-by-step explanation:
The Antimeridian passing through mostly ocean is beneficial for several reasons. First, it prevents any one country from controlling it for prestige, as many countries would want it to be located in their territory. By being in the ocean, it remains neutral. Second, crossing the Antimeridian results in a full day time change, which could disrupt timekeeping in large countries if it passed through them. Lastly, the Antimeridian is mostly monitored and maintained by maritime organizations, making it easier to reach via boat if it is located in the ocean.
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