Leviathan
Leviathans are sentient spaceships in the Farscape universe. They are an engineered race, made sentient by the Builders. Leviathans are made of both biological and mechanical systems, and are therefore biomechanoid. They have a thick outer skin capable of keeping a pressurized atmosphere inside, and also generate a bioelectric field that can keep small openings in the hull from venting atmosphere. Holes in the hull are repaired by symbiotic organisms called Hodian trill bats, whose excrement is a sealant. Other maintenance details are handled by mechanical DRDs, cat-sized droids that the Leviathan manufactures.
Inside, the Leviathan consists of countless corridors and compartments. Each Leviathan grows differently depending on the needs of its crew. At the very core of a Leviathan is an area known as the "Pilot's Den". This is where a member of the Pilot species symbiotically bonds to the Leviathan. While Leviathans can operate unbonded, most functional Leviathans have a Pilot bonded to them. A Relgarian can also be bonded to a Leviathan, although it has yet to be seen in the series. Lacking a Pilot, Leviathans can be manually steered by the crew from the control deck.
Because of their nature, Leviathans are not able to communicate well with their passengers. Pilots play the role of translator and liaison between the ship and the crew. They are also responsible for maintaining life support functions, minor internal repairs and other detail jobs that are not related to the Leviathan's well-being but important for the passengers. When a Pilot dies or is incapacitated, most Leviathans lose some degree of control over these internal systems (especially life support).
Leviathans have a vast knowledge of space, and their senses are specifically adapted to be used as sensors for space travel. Leviathans have the unique ability to perform starbursts, a superluminal form of travel that they use for defense and for long-range travel. A Leviathan enters starburst by energizing a matrix of sorts on its outer hull, beginning at the front of its body and going to the tips of its three tails that come together at their ends. Once the matrix has been completely energized, the ends of the three tails separate from one another, and the Leviathan enters the rift in space-time that opens ahead of it, which promptly seals itself as soon as the Leviathan is through. While in starburst, the Leviathan is "riding the seams between dimensions", essentially sliding around the outside of the universe to get to (roughly) its destination. Navigation is less of a science and more of an art, as one never knows exactly where one will come out when leaving starburst.
Leviathans possess no natural weaponry, as they were designed as transport ships or "Emmisaries of Peace" (the exception being Talyn, who is a hybrid). They rely on their ability to Starburst to escape danger. Leviathans also have a docking web they use to "pick up" objects and small ships and bring them into their docking bay. The docking web is apparently powerful enough to immobilize and "reel in" small ships (like a prowler or transport pod), although only at very short range. Because of their large size and usefulness, Leviathans are often enslaved by Peacekeepers by means of control collars.
Read more about this topic: List Of Races In Farscape