In Gansbaai (South Africa), at Dyer Island Nature Reserve, a large White shark population is present and can be observed due to the support of local ecotourism operators authorised reach field observation sites. Between 2009 2019, it was possible create database including information about each individual observed. total, 423 white sharks were sighted during 462 direct hours from boat, that inc...

In April 1998, as part of a project to collect biopsy samples putative pygmy blue whales (Balaenoptera musculus brevicauda) in the waters around Republic Maldives, Indian Ocean, incidental sightings cetaceans encountered were recorded. Using modified line-transect methods and handheld binoculars, total 267 16 species dolphins recorded during 20 at-sea days northeastern atoll. Significant result...

STOCK DEFINITION AND GEOGRAPHIC RANGE There are two hematologically and morphologically distinct bottlenose dolphin ecotypes (Duffield et al. 1983; Duffield 1986) which correspond to a shallow water ecotype and a deep water ecotype; both ecotypes have been shown to inhabit waters in the western North Atlantic Ocean (Hersh and Duffield 1990; Mead and Potter 1995; Curry and Smith 1997). Bottlenos...

Manta rays Manta alfredi are present all year round at Lady Elliot Island (LEI) in the southern Great Barrier Reef, Australia, with peaks in abundance during autumn and winter. Drivers influencing these fluctuations in abundance of M. alfredi at the site remain uncertain. Based on daily count, behavioural, weather and oceanographic data collected over a three-year period, this study examined th...