GRNMS Team Ocean Divers Randy Rudd (l) and Mike Mullenix (r) prepare a small launch boat aboard the NOAA Ship Nancy Foster for receiver dives.
(Photo: Debbie Campbell)

Divers Sarah Fangman (l) and Chris Gardner (r) prepare for an underwater fish tagging surgery dive.
(Photo: Kacey Johnson)

Diver Sarah Fangman removes acoustic receiver for data download.
(Photo: Jamie Park)

New receiver ready for data recording.
(Photo: Greg McFall)

Divers Josh Slater (l) and Sarah Fangman (r) attach a new, clean acoustic receiver.
(Photo: Jamie Park)

Divers Chris Gardner (l) and Paul Barbera (r) corral fish from trap.
(Photo: Greg McFall)

Divers Paul Barbera (l) and Chris Gardner (r) survey fish in trap.
(Photo: Greg McFall)

Untagged scamp grouper surveys fish in trap.
(Photo: Greg McFall)

Diver Greg McFall performs surgery to insert the tag underwater, which is much less harmful than catching the fish with a hook and bringing the fish to the surface for surgery.
(Photo: Jamie Park)

Diver Greg McFall (l) assisted by diver Sarah Fangman (r) sewing a scamp up after tag has been inserted.
(Photo: Jamie Park)

Diver Greg McFall measures tagged scamp.
(Photo: Jamie Park)

Tagged scamp is released .
(Photo: Jamie Park)

Tagged scamp grouper.
(Photo: Greg McFall)

Tagged black sea bass swimming among untagged black bass.
(Photo: Sarah Fangman)