The tidal pool in "Stardew Valley" is a very important place in the beach area in the game, and the function of this place is that only coral and sea urchins can be collected here. Bring 300 wood to repair the broken bridge. Then you can reach the tide pool on the east side of the beach.
What are the uses of tide pools in Stardew Valley
Tidal Pools
After carrying 300 wood to repair the broken bridge, you can reach the tidal pool on the east side of the beach. Only here will you find corals and sea urchins.
Enter the beach before 19:00 on a rainy day (it won’t rain naturally in winter, but you can use a rain totem). There will be an old sailor at the tide pool. If the player is unmarried at this time, has upgraded his house, and has sent a bouquet to A marryable NPC with a friendship level of 10 hearts will sell a mermaid necklace (5,000 gold); giving a mermaid necklace means a marriage proposal (can only be proposed to villager NPCs who can marry).