Linked from
The 20 pages that link to Tidal interaction, each with the reason it gives.
Galaxy mergerRelated: Uneven gravity pulls stars and gas into tails, bridges, and distorted shapes.
Hot JupiterRelated: Tides can alter a hot Jupiter’s orbit and synchronize its rotation.
Spiral armRelated: A companion galaxy can induce or strengthen spiral arms through tidal forces.
Magellanic CloudsRelated: Mutual and Milky Way tides shape the Clouds and draw out their debris.
Grand-design spiral galaxyRelated: Tidal forces can generate or reinforce a coherent spiral pattern.
Messier 81Related: Interactions among M81 Group galaxies have drawn out gas and stellar material.