How would living organisms develop/evolve in a very-low g ocean environment?
The environment would be a small radioactive core surrounded by a small mass of water, less than 100 km in diameter, in the center of the L4 or L5 Lagrangian point between a very large planet and a large moon.
The body of water would be held together by surface tension, the forces of the Lagrangian point, and a thin outer layer of ice.
The water is kept liquid from the heat of the radioactive core.
The moon provides sufficient amounts of radioactive material, water, nitrogen and carbon in a similar fashion to how Enceladus provides the material of Saturn's E Ring, such that the body of water keeps a stable amount of water, the core receives new radioactive material as the old one decays, and life has the materials to develop.
The large planet has a strong magnetic field protecting the body of water.
How could/would solid or liquid multicellular life forms develop in a body of water without substantial gravity?