Zebra mussel poop seems to be fueling rising mercury levels in walleye and perch, according to a new Minnesota study.
mussels and other recognisable beasts. These creatures were found dwelling 2,515 metres (8,250 feet) below the surface of the Pacific Ocean in hidden holes within a hydrothermal vent field.
Freshwater mussels were once abundant throughout Minnesota’s waterways. But their populations have declined due to habitat ...