Spiny Castrum

From Sagan 4 Alpha Wiki
Jump to navigation Jump to search
Spiny Castrum
(Crescoaculeus aceres)
Artwork of Spiny Castrum
Species is extinct.
20/134, Symbioship Plague
Creator Kenotai Other
Crescoaculeus aceres
Week/Generation 19/129
Habitat LadyM Ocean (Sunlight Zone), Flisch Coast, King Coast, Krakow Coast, Huggs Coast, Soma Coast, Yokto Coast, Ovi Coast, Clayren Coast, Ittiz Coast, Nuke Coast, BigL Coast, Hydro Coast, Ninth Bay, Truteal Shallows, Xeno Shallows, Dass Shallows
Size 2 cm Wide
Support Unknown
Diet Photosynthesis
Respiration Unknown
Thermoregulation Unknown
Reproduction Asexual Budding

The spiny castrum split off from it's ancestor, the suction crastrum. When a symbioship diamiboard went through Soma Coast, some suction crastrums stuck onto them, where they then carried them off. However, the small crastrums were easy to eat for any that ate them. So, it grew some large spines in the same vein that the thorny crastrum grew thorns. The spiny crastrum has five large spines, one at each indent, and one in the center. Two of the ones on the sides point forward, catching any small prey that might be beneficial for the diamiboard and its inhabitants.

The crastrum's benefited when the whole symbioship moves, causing currents to form around the crastrum, aiding in photosynthesis by carrying away waste gasses. Another way that the spiny carstrum aids the diamiboard is that they grow all over the edges of the ship, which helps to keep larger predators away, and to that end their shape has changed to better tessellate with each other. By this logic, some symbioship hydroglobes got crowded out at the edges, but the hydroballs benefit from the crastrums protection. The crastrums are not harmed by the hydroballs because they do not sleep.

Living Relatives (click to show/hide)

These are randomly selected, and organized from lowest to highest shared taxon. (This may correspond to similarity more than actual relation)
  • Hallucrastrum (family Adhesifoliaceae)
  • Stalk Rastum (order Adhesifoliales)
  • Colonial Calmstrum (class Crescoasteropsida)