Chum for the Fishes I admit it’s an icky subject but given the fact that much of Alaska can only be explored by water—and that most tourists first experience Alaska by taking a cruise. Let’s put aside our squeamishness and do a deep dive into the issue.  What causes it? According to the National Oceanic and Atmospheric Administration, “Seasickness is a result of conflict in the inner ear and is caused by a vessel’s erratic motion on the water. Inside the cabin of a rocking boat, for example, the inner ear detects changes in both up and down and side to side acceleration as one’s body bobs along with the boat. But since the cabin moves with the passenger, one’s eyes register a relatively stable scene. Agitated by this perceptual incongruity, the brain responds with a cascade of stress-related hormones that can ultimately lead to nausea, vomiting, and vertigo.” Basically,…