bathyal
- a relating to ocean depths between 200 and 2000 meters (corresponds to the continental slope)
bathymetric
- a of or relating to measurements of the depths of oceans or lakes
bathymetrical
- a of or relating to measurements of the depths of oceans or lakes
batrachian
- n any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species
- a relating to frogs and toads