UNDERWATER CU RA of several pteropod clione (naked sea butterfly) flapping its "wings" and moving upward through water (appearing black in the background). CU FA starting out of focus, PULL FOCUS to pteropod cavolinid using its wing-like appendages to propel itself through water. MCU FA of pteropod cavolinid (sea butterfly) swimming from bottom screen to top. MS of pteropod cavolinid and pteropod clione swimming side by side, cavolinid bumping into clione, swimming off. LA CU of pteropod clione (sea butterfly) using its "wings" to propel itself through water appearing black in background. MS of pteropod clione and pteropod cavolinid swimming together through water appearing bluish in background. (LETTERBOXED MATERIAL) (41219)