Jay Hemdal
  • Jay Hemdal

    Jay Hemdal has kept aquarium fish since he was four. He set up his first marine aquarium in 1968 when he was nine years old. He later worked part time for many years at various local retail pet stores and fish wholesale companies while he was living at home and then during college. After graduating from college with a degree in aquatic biology, he managed the aquarium department of a large retail pet store for five years until 1985, when he was hired as an aquarist/diver (and later department manager) for a large public aquarium. In 1989, he accepted the position of curator of fishes and invertebrates for another public aquarium, where he remains today. Jay has written over 200 articles and papers as well as seven books since 1981.

Recent Content

Micro-Ecosystems

Micro-Ecosystems

Imagine a device that has a water pump that sends water to the top of a tower and then releases it. As the water spills down due to force of gravity, the water spins a generator that in turn produces electrical energy to drive the pump, which sends more water to the top of the tower – and so on forever.…