Results and discussions
In Korea, harvesting activities on tidal flat are handed down
among people as marine culture (Ministry of Oceans and
Fisheries, 2002a). Fishing gears used in tidal flats are divided
into four different categories: (1) collection tools, (2) de-shelling
tools, (3) containers, and (4) carrying tools (Fig. 3). As of oyster
collection, there is one more category of tools used for water
draining after de-shelling.
Collection tools vary by the getbatang and the object of
collection, such as manila clam (Ruditapes philippinarum),
venus clam (Cyclinasinensis), surf clam (Mactrachinensis), hard
clam (Meretrix spp.), and mud octopus (Octopus minor). In
Daebu Island, it was found that different types of collection
tool were used for different getbatang. These fishing gears have
evolved and developed to optimize the collecting, using the
materials that were available at the time of their development.
Hand hoes used in tidal flats (for collection of shellfish) differed
from the ones used on field. Collection gears were paired
with containers (Fig. 4).
Collection fishing tools
Fishing gears for tidal shell fishes differ by the type of collection
species, because the characteristics of getbatang vary by
species. Also, some variations are found by the individual
users, the blacksmith shop where the gear was made, and the
sex of the user. When and if a specific shape of a tool is found
to be more effective in collection, it eventually becomes the
uniform standard of that region. There are cases where people
did not employ any collection tools in gathering clams in