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It is emphasised in the passage that Richard Aidan Martin ----.
More mythology surrounds the shark than any
other creatures in the ocean. This is partly a symptom
of their colossal size – adult male great whites can
measure in excess of five metres; the temptation for
humans to add a metre here or there after reported
sightings is irresistable. Sharks are also, by nature,
mysterious. Scientists still know next to nothing about
great whites’ breeding habits; a birth in the wild has
never been observed. One of the biggest great
white shark myths is that the creature, disabled by its
notoriously poor vision, often mistakes surfers and
scuba-divers for its main prey – seals and sea lions.
“Completely false,” says Richard Aidan Martin, director
of the ReefQuest Centre for Shark Research in
Vancouver, Canada. After observing 1,000 predatory
attacks on sea lions by great whites for five years, he
states that the sharks rocket to the surface and crush
their prey with incredible force; however, they usually
approach humans with leisurely or undramatic
behaviour. Martin points out that great whites are
curious and investigative animals, which is what most
people do not realise. When great whites bite something
unfamiliar to them, whether a person or a sea creature,
they are looking for tactile evidence about what it is.
They usually throw humans out of their mouth after
an exploratory bite rather than swallow them for food
because humans are too bony. To add more, great
whites must be extremely selective about their diet.
Their digestive tracts function very slowly, and eating
the wrong thing would slow the shark down for days and
stop them from consuming anything else