One of the first side quests in Temtem is called “Gone with the Sillaro”, where you need to find the missing pendant.
Important note: you need a surfboard to perform this quest.
How do we start the quest?
Complete the game prologue until you get control of the hero outside the Professor’s house. Walk east of the house along the coastline, where you will see a woman named Cl’h. Talk to her, and during the conversation she will mention a pendant that was lost on the Sillaro River.
Where can I find the pendant?
Once you have a surfboard, take a trip down the Sillaro River to find the pendant. The exact location is shown in the screenshot above. This beach is east of the docks in Brical de Mar. Find sparks in the sand and interact with them to get the pendant.
Go back to Zadar, talk to Claire and give her back the pendant – you will receive the TC001: Tsunami as a reward. It’s a combat technique that you can teach your Tempem.