Asexually mature seahorse can produce thousands of offspring. what is the best reason overproduction of offspring by marine organisms is considered to be a reproductive advantage?

The best reason for this, in my opinion, might be because there are many, many predators in the ocean so overproduction maybe so that there will still be seahorses who survive. ( I don't know if this is totally accurate to your question but for me, that would be the first idea that comes to mind.) I hope this will help.