Volume reverberation measurements were made utilizing surface-vented explosive sources and an omnidirectional receiver in the Caribbean Sea along the Aves Ridge during winter and summer. Results are presented in the form of scattering strength profiles and column strengths for one-third octave bands between 2 and 20 kHz. Seasonal variations in scattering were found to be small, as were geographical variations both along and across the Aves Ridge. During both seasons diel differences in column strengths of up to 18 dB occurred at frequencies below 5 kHz. Above 10 kHz nighttime column strengths were only several dB higher than daytime values.