Johan Hjort discovered:
the salt-nutrient distribution in relation to plankton
sea anemones as deep as 32,800 feet
that fish change color with depth
a major current in the Pacific ocean located at the equator
the salt-nutrient distribution in relation to plankton
sea anemones as deep as 32,800 feet
that fish change color with depth
a major current in the Pacific ocean located at the equator