I have often said that sea vegetables are criminally underrated. Like their terrestrial brethren, they offer significant nutrition, but sea vegetables also provide the same omega-3 fatty acids found in fish (where else do you think fish get their omega 3s from?).
A few months ago, I came across SeaSnax , a roasted seaweed snack cooked in olive oil (most varieties contain sesame oil; while not a terrible oil, it lacks the heart-healthy monounsaturated fats of olive oil).
Available in plain, onion, chipotle, and wasabi flavors, this is a delicious, crunchy, GMO-free snack (or a great addition to soups and salads) with a simple ingredient list.