pp. 124 illusts #0820 “The apparent ‘mass suicide’ of dolphins and whales has always posed an iexplicable enigma…” ISBN 10: 0907997023ISBN 13: 9780907997023able action animals appear assistance attempt bachelor herd balance beach become begin behaviour body calf calls calm causes cetaceans close coast continued course death deep Denis depth discovered distress dolphins efforts entire estuary event evidence experience family groups females Figure given grounded harem herd head helicopter herd stranding high tide human immediately individual inlet involved keep key whale known less living lost male March mating measures milling moon moved natural normal observed occur particular patterns period Phase pilot whales Plate position possible prevent prior problem procedures reason remain rescue rescuers respond rest result rolled Rostrum sand saved seawards severe shallows shore showed shown side situation species specimens sperm whales spotter stranded whales stress successful surface swimming techniques Type upright victims winds worm Zealand