Dive Into Success: Master the SDI Open Water Scuba Diver Exam 2025 – Make Waves with Confidence!

Question: 1 / 400

What kind of signal can you use to indicate "OK" underwater?

Thumbs-up signal

The thumbs-up signal is a universally recognized gesture among divers to indicate that everything is fine or "OK" underwater. This signal involves simply forming a fist with your hand and extending your thumb upward. Its clarity and simplicity make it an effective means of communication in an environment where verbal communication is impossible due to water and equipment constraints. The thumbs-up signal can be easily seen from a distance and is understood by most divers regardless of their training background, which reinforces safety and understanding during dive communication.

While other signals may have their specific meanings in different contexts or cultures, they are not standardized in scuba diving in the same way that the thumbs-up signal is. Therefore, the thumbs-up is the best choice for indicating that you are okay while underwater.

Get further explanation with Examzify DeepDiveBeta

Waving hand signal

Palm open signal

Finger pointing signal

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy