Leviathans are the Zerg's equivalent of a capital ship. They are classified as the largest in terran records, even larger than a mothership. Measurements taken by the Terran Dominion have placed the leviathan at being around 6.7 kilometers long, but due to her creature like ancestry, they can vary in size
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around 11 kilometers long
They are classified as class-10 zerg flyers and are the largest in terran records, even larger than a mothership, though dwarfed by an arkship, and have been referred to as "moon sized." Measurements taken by the Terran Dominion have placed the leviathan at being around 11 kilometers long.
The leviathan is a massive airborne zerg breed. Leviathans are the zerg's equivalent of a capital ship.[1] They are classified as class-10 zerg flyers and are the largest in terran records,[2...
The arkships (a.k.a. ark vessels) were a trio of[1] massive protoss starships[2], larger than even the zerg leviathans, that were constructed by order of the Conclave[3] long prior to the Great...
"At some point, we will falter. We will. It is mathematically irrefutable. We dream of the protoss empire standing for all of eternity. But we know—we know—that we cannot eliminate every hidden flaw. We have been considering how to deal with the consequences of individual disasters. We have not considered how to deal with the day when the Firstborn face extinction. Maybe it will come from us; maybe it will come from an enemy. But the day will come. The arkships. They are still the solution."
- Grand Preserver Shantira