MacNeil Bank

Color bathymetric map of sea floor around East Flower Garden Bank MacNeil Bank, Rankin Bank and 28 Fathom Bank showing the connecting ridges between formations
Structural connections on the sea floor between East Flower Garden, MacNeil, Rankin and 28 Fathom Banks

Bottom Depth Range: 210-315 feet (64-96 meters)

MacNeil Bank is located northeast of East Flower Garden Bank, and is structurally connected by a ridge running between the two features. The prominent areas of MacNeil, East Flower Garden, Rankin and 28 Fathom Banks are located around the semicircular rim of a depression in the sea floor that is about 14 km (2.5 mi) across.

Color bathymetric map of MacNeil Bank
MacNeil Bank lies within a Habitat Area of Particular Concern (HAPC)

MacNeil Bank is about 6 km long (3.7 mi), 450 m (1476 ft) wide, and bisected by a 230 m (754 ft) wide trough.  The southern portion of the bank stands about 16 m (52 ft) above the sea floor to the east. In contrast, the northern portion of the bank stands less than 10 m (33 ft) above the surrounding sea floor.  The shallowest portion of the bank is 64 m (210 ft) beneath the surface.

ROV surveys show mesophotic habitat at MacNeil Bank, including black corals, gorgonians, sponges and fish. It is also designated as a Habitat Area of Particular Concern (HAPC).

MacNeil Bank is named after F. Stearns MacNeil, a U.S. Geological Survey geologist.

Looking down on a Webbed Burrfish swimming just above the sea floor. It's colors blend with the bottom color.
A Webbed Burrfish swims among black corals, sponges and gorgonians at MacNeil Bank
Bright red Creolefish swim past a large rocky formation in a deep reef area
A school of Creolefish swim around a rocky feature at MacNeil Bank
Two large brownish red sponges attached to the substrate with a small bright orange sponge in the right foreground. A white whip-like coral is visible behind the brownish sponge. A small bushy black coral sits to the right of the orange sponge.
Sponges and black corals at MacNeil Bank