Although bass can refer to many species and varieties of fish, both saltwater and freshwater, the fish in your local supermarket is probably European sea bass.
Sea bass makes excellent eating, with its milky white flesh and subtle flavour, it's is a real delicacy. It can be a relatively expensive fish.
It's delicious grilled simply or steamed. Don't overcook it. When you press the skin, you should just be able to feel the moist flakes of fish sliding apart.