Ver en Cuevana3 | Online Gratis. The secret world of plants gets us closer to these motionless and quiet creatures, so attractive and surprising as the rest of the living creatures. The documentary reveals the most unknown aspects of the vegetable kingdom. We learn about the secret of the eternal youth of a 3500 years old sequoia and be charmed by the 'rafflesia arnoldi' flowers, able to reach up to one meter of diameter.