Sharks have a reputation for being ruthless, solitary predators, but
evidence is mounting that certain species enjoy complex social lives
that include longstanding relationships and teamwork.

A study, published in the latest
Animal Behaviour,
documents how one population of blacktip reef sharks is actually
organized into four communities and two subcommunities. The research
shows for the first time that adults of a reef-associated shark species
form stable, long-term social bonds.
The image contrasts with usual reports on this species, which
mistakenly sinks its sharp teeth into surfers and swimmers from time to
time.
Lead author Johann Mourier told Discovery News that “other species,
such as grey reef sharks and scalloped hammerheads form polarized groups
where individuals have a specific place, and such species may also have
complex social organization.”
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