Using a bathymetric chart, draw lines perpendicular to the ridge line of the bank about one inch apart. Use graph paper to make a profile of the bottom along each line. Glue the graph paper to pieces of cardboard and cut out the profiles. Line the cardboard profiles up one inch apart in clay or similar substance to hold up the cardboard, and cover with damp cloth or paper. Press the cloth or paper down gently to the contour of the cardboard, allow to dry, spray with paint and allow the paint to dry.
Water testing is an important part of oceanography and whale research.
Temperature, density and salinity are commonly tested qualities of sea water. Use a thermometer to measure the temperature and a hydrometer to measure the density. Record this information on the Sighting Data sheet. A plankton tow and analysis explains a great deal about why whales are where they are. If only one plankton net can be purchased choose a phytoplankton net, since it collects both plant and animal plankton.