Definition: A two dimensional oval shape (circular shape with two axes of symmetry, one axis longer than the other) that is displaced along the longer axis.
Definition: A three dimensional oval shape (circular shape with two axes of symmetry, one axis longer than the other) that is displaced along the longer axis. '
Definition: A shape quality inhering in a bearer by virtue of the bearer's being such that every part of the surface or the circumference is equidistant from the center.
Definition: Living in the fluid medium (water or air) but unable to maintain their position or distribution independently of the movement of the water/air mass (adapted from Lincoln et al., 1998).
Definition: A color hue with high wavelength of the long-wave end of the visible spectrum, evoked in the human observer by radiant energy with wavelengths of approximately 630 to 750 nanometers.
Definition: An aquatic biome that comprises systems of open-ocean and unprotected coastal habitats, characterized by exposure to wave action, tidal fluctuation, and ocean currents as well as systems that largely resemble these. Water in the marine biome is generally within the salinity range of seawater: 30 to 38 ppt.
