def buoyant_force(dens_gcm3, vol, sw_dens=1.028):
    """Cacluate the buoyant force of an object in seawater

    Args
    ----
    dens_gcm3: float
        Density of the animal (g/cm^3)
    vol:
        Volume of the animal (cm^3)
    sw_dens: float
        Density of seawater (Default 1.028 g/cm^3)

    Returns
    -------
    Fb: float
        Buoyant force of animal
    """
    g = 9.80665
    return 1000 * (sw_dens - dens_gcm3) * (1e-06 * vol) * g
