by Stephen
R. Gittings
. . .Continued from Part 2
The remote location of the banks has left them relatively undisturbed by
human activities. It also appears that protective regulations imposed by
MMS, the National Oceanic & Atmospheric Administration (NOAA), and others,
combined with voluntary attempts by the oil industry and the recreational
dive community to operate in an environmentally friendly manner have minimized
potential impacts on the banks' fragile resources. For example, charter
boat operators voluntarily prohibited spearfishing and souvenir collecting
prior to the designation of the marine sanctuary, and oil companies operating
near the Flower Gardens voluntarily report even minor spills to NOAA.
The reefs see over 2000 recreational divers each year. With this level of
visitation, the banks are slowly giving up their secrets-and focusing our
attention on important questions. Each winter the reefs witness reunions
of enormous hammerhead shark schools. Whale sharks, which grow to sixty
feet in length, can be abundant one year but absent the next. Manta rays
can be seen year round, an attraction claimed by very few places in the
world. We do not know whether the rays are residents, transient wanderers,
or repeat visitors. In the summer, divers can see newborn mantas, but seldom
the adults, whose whereabouts remain unknown during that season. Adults,
some over fifteen feet across, seem to be winter inhabitants. Like rays,
the habits and migrations of sea turtles are poorly understood. Studies
of these species' life histories have been possible only recently, largely
because of the involvement of recreational observers.
Oceanography, Texas A&M
University
rshatto@ocean.tamu.edu
URL=http://oceanography.tamu.edu/Quarterdeck/QD3.3/Gittings/gittings-c.html
Updated December 20, 1995