Summary:
Camels can swim in water with a player in Bedrock, but in Java they drown when a player sits on them. The parity report in Java was resolved as "Works As Intended" - MC-256730.

Steps to reproduce:

1. Summon/find a camel.
2. Saddle the camel.
3. Walk into water.

Observed results:
The camel does not sink when the player rides on it.

Expected results:
The camel will sink when the player is going on it.