Question:Q:how do i record water activities such as kayaking?

Use "Other:" Workout types on Apple Watch - Apple Support

"Other

Choose Other when you can't find a matching workout type. When you use Other, you earn the calorie or kilojoule equivalent of a brisk walk anytime sensor readings are unavailable.

At the end of an Other workout, you can choose a name for your workout from a list of options. This can help categorize different types of activity, like dance, strength training, or cross training.

1. Start a workout and choose Other.
2. When you’re done, swipe right, then tap End.
3. Tap Name Workout.
4. Tap the type of workout, then tap Save."