In places where there is apparent residency of certain species, we are interested in their behaviour.

How far do they forage? Do groups remain cohesive over time? Do they display diel patterns? Do they carry out migrations at certain times of the year?

As well as following species such as the scalloped hammerhead, Galapagos shark and whale shark, which occur over the entire region, each area is also studying species which appear to be more resident: in Galapagos, a new study of a group of white-tip reef sharks has begun in Santa Cruz island, in the centre of the archipelago. In Malpelo, efforts have focused on an elusive shark: the smalltooth sandtiger, known affectionately as “the monster”. This species prefers depths greater than 50 metres, so getting close enough to observe and tag them is a great challenge.