Safir Cave is a large cave at the northern end of Penangkapan island. Inside the cave, many aquatic animals from the deep sea can be found. This area is only accessible after the cruiser is bought. The player must dock at the small pier at the entrance and rent an Inflatable Raft to enter the cave. The larger fish in this area are usually very valuable and very common, making Safir Cave a desirable area to make a profit. However, around midday, the lighting weakens and the waters become very hard to see through, making fishing for specific fish difficult, so you just have to hope that you hook up that specific fish, and not another one by mistake.