M1011 Moray space mine
From Halopedia, the Halo wiki
Moray space mines carry a high explosive payload and small chemical propellant drives that allow them to track specific targets or maintain a pre-defined coordinate location in space. The system for deploying these mines can be controlled from within the launch craft, with up to three dozen mines coming equipped on a single mine rack.
Moray space mines are equipped aboard smaller prowlers and large strikecraft as a deployable ordnance, similar to the nuclear-capable M441 Hornet space mines on larger prowlers. They may be equipped on C718 and C709 Longsword fighters, with the latter requiring removal of the fighter's cryo chamber for the mine rack installation.
Winter-class prowlers are equipped with a single, aft-mounted CBU-R68 Moray mine rack as a secondary armaments. It is unclear whether the CBU-R68 designation refers to a new model of Moray mine, or the launching system itself.
During the assault on Ascendant Justice, Morays were used to destroy the ship's Seraph fighters making way for a Longsword to land on the Covenant ship. They may also have adhesive or magnetic quality to them as they were able to be attached to a remote piloted Pelican and later deployed from it.
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