Where can you get the water pulse tm in pokemon mystery dungeon red rescue team?

In Pokémon Mystery Dungeon: Red Rescue Team, you can obtain the Water Pulse TM by defeating the boss of the Luminous Cave, which is located on the 10th floor of the dungeon. After defeating the boss, you will receive the TM as a reward. Additionally, you can find the Water Pulse TM as a treasure in certain dungeons, like the Luminous Cave itself.