Honeycomb (or super beehive) is a symmetric 12-cell still life. bubblegum found a 5-glider synthesis of this still life in October 2020 with a Catagolue-based random glider synthesis searching script.
It contains a photonegative beehive.
In other rules
As of isotropic non-totalistic rules, honeycomb is common in S8 rules from B3i/S2cik3acy8 to B2-ae34-e5-y678/S01c2345-i678, as a six-cell row evolves into one. It is also common in S2-i rules from B3i/S2ck3cy to B2-ae34-ew5-y678/S012-i345678, where it evolves from a phi spark.