Scientists wonder if Lake Superior can continue to avoid an invasion of mussels

On the hunt for invasive mussels, National Park Service scientists Alex Egan and Lauren Isbell scour the lake bottom near Rock Harbor at Isle Royale National Park. (Josh Boland/Bridge Michigan)

From left, Seth DePasqual, Morgan Smith, and Alex Egan observe zebra mussels that Egan and fellow diver Lauren Isbell plucked from Lake Superior at Isle Royale National Park. (Josh Boland/Bridge Michigan)

This zebra mussel was removed from the Lake Superior at Isle Royale’s Tobin Harbor. (Josh Boland/Bridge Michigan)

On the hunt for invasive mussels, National Park Service scientists Alex Egan and Lauren Isbell scour the lake bottom near Rock Harbor at Isle Royale National Park. (Josh Boland/Bridge Michigan)

ISLE ROYALE, Mich. (AP) — With no cellphone towers, roads or permanent residents, this wi