Algae is the most valuable product on which our health and our beauty depend. Biologists and doctors argue that algae are superior to all other plant species in terms of the content of active substances! Healing, medicinal, edible - seaweed, kelp, porphyry, spirulina, ulva and many others. They are used in cooking, medicine, cosmetics, as well as in a variety of health treatments. But there are also poisonous, toxic, dangerous not only directly for humans, but also for marine life. In this book you will find information about healing algae and dangerous ones. Learn to apply the former and get rid of the harmful effects of the latter. Here you will also find wonderful, proven recipes for very tasty dishes that will enrich your diet and allow you to improve your health.