Originally Posted by
SpiritWind00
Sorry, I did see your post in the main thread but didn't get a chance to reply. Given the other replies here now, if you have the Prison use that to spawn the Marmosea. If not, then (from memory) the crops are not that helpful, but the purple cursed reef would be your best bet. Collect as often as you can from the Coral Castle as they are expensive to buy in the market.
As an aside, I had a look for the goals for the baby marmopea and I don't know that I have them. Can you or Teika help me fill that gap please? or maybe it's there somewhere and I'd run out of coffee to see them!