Mahir - Geography, Flora and Fauna: Mahir positively teems with life. Its dense temperate forests cover virtually the entirety of the world's land. Only its rivers and oceans break up the seemingly endless foliage.In fact, the world is so burgeoning with life that much of it lives in defiance of gravity, as many of the world's enormous trees extend hundreds of metres above the ground and house their own ecosystems.However, the intrusions of the Tyranid swarm could render all of this life little more than biomass to feed the ravenous xenos. All of Mahir's unique characteristics still exist, but if the Tyranids triumph, the world would be left as little more than a barren wasteland.Mahir's climate is remarkably consistent. It is unclear if this is a consequence of atmospheric anomalies, variance in its orbit and rotation, or an unknown characteristic, but there is very little temperature variation across most of the world's surface.From an area very near its polar caps and extending across the equator, the world's temperature consistently holds steady in a range between 20 and 30 degrees centigrade.The world's seasonal changes are subtle and primarily deal with the amount of precipitation during different local months, but even this variation is not extreme. Such consistency has drawn the attention of members of the Adeptus Mechanicus as a planetary anomaly.There has been some speculation that this is an indication that the planet had been seriously manipulated at some point in its ancient history.Some argue that the world's greatest failing is further evidence of such manipulation.Simply put, Mahir has an extremely limited supply of workable metals. While some exist at low levels within its native organisms, there are very few metallic ore deposits within its crust.The Imperium's technology base lacks any efficient way to extract enough materials from Mahir to effectively construct a hive city. This could also have played a key factor in the failures of past Imperial colonial attempts.This limited selection of metals have also played a factor in the development of the world's biosphere. To state that all of its organisms are aggressive understates the severity of Mahir's indigenous species.All of the world's animals and many of its plants are seemingly engaged in an unending drive to consume any source of metals that they can find. In their natural state, this primarily consists of other organisms, which carnivorous flora and fauna target for consumption. However, any visitor to the world is targeted, along with their metallic equipment.Mahir's organisms are extremely persistent in their attempts to use their acidic saliva to break down metals so that they can absorb them.Excepting the massive tree analogues which make up the majority of the forest, much of the world's flora demonstrate some degree of motility. This is believed to be an adaptation to assist them in their endless quest to identify further sources of metals. While these sources include ores within the planet's soil, it also includes any slow-moving animals.All of Mahir's animals are multi-limbed invertebrates analogous to Terran arthopods and insects. These organisms vary in size from near microscopic up to nearly 30 centimetres in length. All known specimens exhibit thick, organic carapaces.Many of these are extremely resistant to damage, including acidic attacks. This is most likely an adaptation to the world's aggressive plant-life, but also to the efforts of the world's other animals. From an ecological niche standpoint, these animals occupy a diverse range of habitats.They are present throughout Mahir's various biomes and demonstrate a broad range of different adaptations. Most of these creatures are particularly active at night, because after the sun sets, the world's plants are typically much less motile and vulnerable to predation.