The ocean has killed more people over the years than all wars combined. amirite?

I really doubt this.

Possibly. However, unlike war, the ocean is also responsible for all life on this planet. So, I think it's made up for anyone or might've killed.

Well neither war nor the ocean is in the top ten.

"World War II was the deadliest military conflict in history. An estimated total of 70–85 million people perished," wikipedia

https://en.wikipedia.org/wiki/W..._II_casualties

The earliest evidence we have of seafaring dates back to about 3000 BCE, roughly 5000 years ago. Especially in the earliest years thar 230,000 figure is probably much too high -there are simply more people on the sea now than there were at any other point in history- but let's go ahead and hold the number constant, since some smaller number of people would have died from non-sailing causes even in the years before then. The margin of error here is going to be high, but bear with me.

Take your figure and multiply by 5000, and we get some 1.15 billion people in total killed by the ocean.

How does this compare to the number of people killed in all wars combined? This is hard to say. Estimates on this vary widely, ranging from some 660 million all the way up to some 3.5 billion.

End result: I'm going to have to call OP's claim unlikely, but not impossible. Even if we cut the 1.15 billion figure by a third, it's still high enough to beat the low estimate for war casualties. However, it would require most of the estimates for war casualties to be pretty wildly on the high side -much more so than the 1.15 billion figure for ocean deaths probably is- and I'm not sure this is likely.

What about people who drowned in sea wars

Just zero percent chance of proving this to be true.

No one said anything of the biblical flood that killed all but 2