In the newest snapshot 13w09c, when breaking a block in the ocean or facing it, particles become transparent. To recreate it, just face the ocean and place a torch and see the particles of the torch, of breaking a block on, or facing the ocean.
MC-10684
Transparent Particles
Resolved
Duplicate
0
Blue
(Unassigned)
Unconfirmed
Snapshot 13w09c
Retrieved
Duplicate of MC-9553, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.