"Chestnuts of the sea." A name in Castile for sea urchins. The edible part is the orange coral or roe. They should really only be eaten live.
Sea perch. Ray’s bream. A type of sea bream or porgy. Confusingly, in the US this is known as pomfret which, in the UK, is a quite different fish.
Dolphin fish or dorado, silver and gold and found all over the world. No relation to a dolphin. Usually made into steaks.