I'm happy to report that most of these little guys have been adopted! Three babies are still available, all cast in oxidized bronze, the bottom one with a multicolor striped Tahitian, the top left with a peacock grey Tahitian, and the upside-down cutie on the right with a dark golden ripple freshwater. The parents are also considering new homes, now that most of the kids have moved out.
And to answer Pattye, I cast these in sterling silver, bronze, and rose brass. Thinking I might need to make one in gold for myself one of these days, though I would still want some oxidation to show the details of the suction cups.