Grow Your Own Coral

Keeping a saltwater aquarium is a beautiful and popular hobby. It’s also an expensive one. There’s the cost of the tank, the fish, the equipment, and of course, the coral. Aquarium coral can cost anywhere from $40 for beginner corals, up to $300 for exotic types.

Coral Teamwork

As a rule, coral eat tiny floating animals called zooplankton. It’s a pretty passive way of getting a meal. But there’s a new study that shows that some coral might be more aggressive about their dinner.