Presence of large colonies (>100cm) of the hydrocoral Millepora alcicornis in the coral reef of Tamandaré - Pernambuco, Brazil (Field surveys from Feb2017 to May 2019)

Underwater
mapping of hydrocoral Millepora alcicornis was conducted from February
2017 to May 2019, as part of a conjoined, ongoing effort to map the benthic
habitats and monitor the coral reefs of the area.Field survey was undertaken using photo and video transects and a diver-towed GPS (Garmin eTrex 20x) recording location data at 5 s intervals.Video recordings were undertaken by a
patiently swimming diver using a GoPro coupled on top of a one-meter handle. To
enable the estimation of the size of the coral colonies, a measuring tape was
attached to a PVC one-dimensional frame. The location of each coral
colony was recorded by checking the timestamp of the specific photos and video
frames containing the species and syncing it with a digital watch carefully
synchronized with the towed GPS.
Specimens
of Millepora alcicornis were also classified by size. The table shows data related to the species' colonies
larger than 100 cm.