It is said that Mars once had shallow seas and native life, at least up to the level of simple aquatics and insects. Can Creator describe Mars at the peak of its diversity?

At its peak, Mars enjoyed many diverse life forms, both aquatic and terrestrial in habitat, not as diverse as the current Earth but sufficient to support an intelligent species of Martian humanoids. These are quite like humans in many respects and survive to this day, both in underground bases on the planet as well as underground bases on the Earth itself. These beings are essentially captives and serve as guinea pigs for continuing genetic manipulation by the alien Greys seeking to understand their characteristics and exploit their genomes for any useful attributes, as they do routinely with human beings as well. Their dilemma is quite sad and is a vivid example showing the future of humanity if more are not awakened to the reality you are under the thumb of the Dark Extraterrestrial Alliance and may end up undergoing a mass annihilation.