アメリカ自然史博物館さんのインスタグラム写真 - (アメリカ自然史博物館Instagram)「Summer is in full swing, which means firefly season is officially upon us! There are more than 2,000 known species of fireflies worldwide and most communicate with patterns of flashing light. These signals are used to find and attract mates, deceive other firefly species, and avoid predators. Fireflies are bioluminescent, producing light by blending a cocktail of two chemicals—luciferin and luciferase—in a specialized organ known as their lantern. Photo: Mike Lewinski, flickr」6月30日 9時39分