FRI. 20 FEB. 1953 COURSE 236°. CLEAR, SOME ALTO CUMULUS, LOW CUMULUS, + LATER IN A.M. A RAIN SQUALL OR TWO. SEA GLASSY WITH AN OCCASIONAL MODERATE SWELL + A FEW WIND PAWS. JUST BEFORE BREAKFAST 7:30 A GIANT RAY OR MANTA SWAM BY OUR STARBOARD SIDE 15' OFF; COULD SEE TIPS OF FLIPPERS BREAKING WATER + SHAPE AS HE WENT BY. PASSED LARGE SCHOOL OF TUNA JUMPING 2-3 TIMES LENGTH. BOOBIES + SHEARWATERS + SMALL BL. + WH. PETRELS. BOOBIES SEEM IMMATURE - PALE BLUE BILL (DARK BROWN, PALE BILL, YELL? LEGS). ANOTHER SCHOOL OF TUNA AT 10: ALSO SMALL TURTLE RESTING AT SURFACE. THE TUNA ARE QUITE SPECTACULAR LEAPING; SOME DO BARREL ROLLS IN MID-AIR. VARIOUS SMALL PETRELS AT DISTANCE. 2 HAD WHITE RUMPS (SHAPE?). LAT: 03°-15' N; LONG 87°-16' W COURSE 242°T DIST.BY OBS. 402 ST.TIME 25 HR. AVG.SP. 16,08 IT. WIND VAR. 2-3 SEA SLIGHT N. TOTAL TIME 1-13-35 TO BRISBANE 7102 MI. FROM BALBOA 603