National Geographic Travelさんのインスタグラム写真 - (National Geographic TravelInstagram)「Photo by @PaulNicklen | In South Iceland, along the Hvita River, a lone fisherman changes his fly before tossing it back in the rushing creek. Although Iceland may not have the largest trophy fish, they have very healthy returns in their salmon populations. Many scientists connect this to the lack of fish farms in key ocean areas where wild adult and smolt salmon leave and return to the rivers. I wish that other countries would follow suit; fish farms disrupt wild ecosystems, and it takes three pounds of foundation fish like herring to produce a single pound of farm fish. #FollowMe at @PaulNicklen for more photos from around the world. #Iceland #salmon #fishing #conservation」3月28日 7時02分