nostr:npub1khx67x36rsu5y2f3ruuq8crnxndmep88399l2phu50etnfcrkr6q6hgeyg Don't they take about 33% of their blood then just dump them back into the ocean?  It's amazing more don't die.  :(

I hadn't heard there was a synthetic substitute.  Is it economically viable?  Not prohibitively expensive?