I was going to post that but then read the next reply
Absorbing UV and X-rays as the energy input for the space whale and jump kraken explain how they can get enough energy to grow so large and maintain their metabolism,
The space whale gathers in dust like an ocean whale eats krill, plankton and algae to get nutrients, Comet tails are a delicacy for them. The have organs that can generate electricity which they can circulate to make organic electromagnets. The can use electic fields and magnetic fields to accelerate waste "out the back" for propulsion and also pass electricity through huge fins to generate magnetic fields that allows them to sail the solar wind and magnetic fields in space.
Their senses range from the radio to the x-ray bands of the ems. They can communicate with each other by organic radio signals.
The body of a space whale is covered in a very thick skin of silicates and minerals that protect the internal organs from the vacuum of space and absorb the incident light, their skin is in effect a natural stealth coating since so much incident radiation is absorbed to be use to power the organic processes in the internal organs.
The jump kraken is an altogether more dangerous beast. It predates space whales...
Discussion is goodSomewhat echoing what @agentwigggles said, but for entirely different reasons;
I agree, while serenely cruising around a solar system following the gravitaional tube map and using their natural magnetic sails they have a pretty sedate existance. And having to go into hibernation for the thousand year trip between systems gives them lots of time to dream and think.I was giving this a Certified Think™ and my gut feeling (meaning, I haven't truly sat down and done the math) would be that the space whales, if truly powered by starlight, would most likely have long periods of relative inactivity interrupted by (comparatively) short bursts of activity.
In the real universe the square cube law is a thing, in the Traveller universe I think it goes the way of thermodynamics. Yes they love to bask in the radiation belts of gas giants, and bath in the light from a gamma ray burst...My reasoning goes more-or-less like this: the creatures would be beholden to the square-cube law, such that the larger they grow the less efficient they'll become in collecting starlight relative to their body size. As such, the """best""" tactic for them, I believe, would be to spend long stretches basking in starlight and accumulating energy in some kind of internal battery/capacitor/accumulator, and then using said accumulated energy to migrate to its next feeding site (and defence, if necessary).
You don't want to be too dear their "rocket exhaust" when they need a sudden burst of accelerationI'm a big fan of them using a biological version of an Electric Sail or Magnetic Sail (I am unsure which one is the most energy-efficient, and therefore what would likely be naturally selected for) like you've proposed. I can see the regolith waste being used for 'fine' or 'precision' manoeuvres around its feeding grounds, such as course-correction adjustments to stay within a comet's tail/coma.
Ponderous but graceful...So circling back to the original point, probably not slow of reflexes like Wiggles said, but certainly ponderous in lifestyle, compared to us ground-huggers.
If they are semi-transparent or completely transparent (jellyfish), the square-cube law doesn't apply, as the energy can be absorbed internally and externally.Somewhat echoing what @agentwigggles said, but for entirely different reasons;
I was giving this a Certified Think™ and my gut feeling (meaning, I haven't truly sat down and done the math) would be that the space whales, if truly powered by starlight, would most likely have long periods of relative inactivity interrupted by (comparatively) short bursts of activity.
My reasoning goes more-or-less like this: the creatures would be beholden to the square-cube law, such that the larger they grow the less efficient they'll become in collecting starlight relative to their body size. As such, the """best""" tactic for them, I believe, would be to spend long stretches basking in starlight and accumulating energy in some kind of internal battery/capacitor/accumulator, and then using said accumulated energy to migrate to its next feeding site (and defence, if necessary).
I'm a big fan of them using a biological version of an Electric Sail or Magnetic Sail (I am unsure which one is the most energy-efficient, and therefore what would likely be naturally selected for) like you've proposed. I can see the regolith waste being used for 'fine' or 'precision' manoeuvres around its feeding grounds, such as course-correction adjustments to stay within a comet's tail/coma.
So circling back to the original point, probably not slow of reflexes like Wiggles said, but certainly ponderous in lifestyle, compared to us ground-huggers.
I do not own this yet, so thank you!Deepnight revelation has 4 ship scale creatures that I can recall.
They are pretty spread out. 2 are in the core set. One is in Riftsedge Transit, and one is in the Far Side of Nowhere. Honestly, the one in Riftsedge Transit is probably not what you're looking for.I do not own this yet, so thank you!
Try reading Warhorse by Timothy Zahn. An alien race has a better interstellar propulsion by taming space life forms with telekinesis that eat asteroids and teleport between stars. Humans want to learn how to use them (or a species that preys on them) for war. Working together both species find a system with a full ecosystem.Hmmm, I can feel an attempt to create some coming up!!!!
Edit - I've created a few, I was trying to build up an ecosystem, however the Whale is not linked to the others. It is the only ship-sized one, though the shark could attack smaller ships.
I'm not sure about a Space giant-squid though, I'll have to give it some thought. It might attack the whales and could be a weapon to take them out created by an unknown, rival, bio-engineering space-faring species.
I'm going to expand on the Whale.
Other examples along those lines include the Tinman from ST:TNG, and Moya from Farscape.Try reading Warhorse by Timothy Zahn. An alien race has a better interstellar propulsion by taming space life forms with telekinesis that eat asteroids and teleport between stars. Humans want to learn how to use them (or a species that preys on them) for war. Working together both species find a system with a full ecosystem.
Reaction times need not be slow if their nerves are super conducting. The "life forms" could be von Neumann machines that have evolved. If they are psionic they could have vast psionic points to go with their ship size.
Other examples along those lines include the Tinman from ST:TNG, and Moya from Farscape.
One of the creatures I've created is very similar to them. It was bioengineered by a race (of which they have no memory), they are psionic and can have a lot of psi points! They can psionically jump between systems and can have passengers on. They travel in pods (because they're sometimes called space-whales. They contain a bio-fusion reactor, (no idea how that works - but then neither do they. Do you know how your liver works?). They feed off comets, taking in the hydrogen for fuel, and the other materials to build themselves.Try reading Warhorse by Timothy Zahn. An alien race has a better interstellar propulsion by taming space life forms with telekinesis that eat asteroids and teleport between stars. Humans want to learn how to use them (or a species that preys on them) for war. Working together both species find a system with a full ecosystem.
Reaction times need not be slow if their nerves are super conducting. The "life forms" could be von Neumann machines that have evolved. If they are psionic they could have vast psionic points to go with their ship size.