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Solutions today for reefs tomorrow
Invertebrate Predation: Check for the presence of corallivores at the lesion margin or the base of the colony.
Hermodice fireworms (F)
Engulf entire branches and protuberances on the colony; uniform and complete removal of tissue from branch tips or projections; smooth, uniform margin between skeleton and live tissue; no evidence of tissue sloughing. Feed mostly at night.
Coralliophila snails (A-E)
Feed in groups (2-70+) at the edge or base of a coral consuming tissue directly under their shell footprint, creating a scalloped pattern. Tissue loss initiating at base or perimeter of coral. The feeding scar progressively radiates out in a linear or annular pattern, but it may extend in an irregular path across the coral. Tissue loss is concentrated on upper surfaces of branches (B) Lesion margin may be irregular, serpiginous, serrated or undulating (A) ; no sloughing of tissue at the interface of exposed skeleton like in WBD, WP and WPD.
Fish Predation: Fish may be seen biting coral; fresh lesions stream mucus. Absence of tissue and skeleton.