On the cover: stylized outline of a leaping Guiana dolphin, Sotalia guianensis based on a photograph by Willem Meijlink (Green Heritage Fund Suriname), used with his permission.

On the cover: drawing of vaquita (Phocoena sinus) © Uko Gorter

On the cover: drawing of giant otter (Pteronura brasiliensis) © José Luis Vásquez Mazzini

On the cover: drawing of killer whale (Orcinus orca) © José Luis Vásquez Mazzini

On the cover: drawing of crabeater seal (Lobodon carcinophaga) © José Luis Vásquez Mazzini

On the cover: drawing of sperm whale (Physeter macrocephalus) © José Luis Vásquez Mazzini

On the cover: drawing of Gervais' beaked whale (Mesoplodon europaeus) © Catalina Londoño

On the cover: drawing of southern right whale (Eubalaena australis) © Daniza Molina-Schiller

On the cover: drawing of Antarctic fur seal (Arctocephalus gazella) © José Luis Vásquez Mazzini

On the cover: drawing of Guiana dolphin (Sotalia guianensis) © Wyb Hoek

On the cover: stylized drawing of South American sea lion (Otaria flavescens) © Mauricio Polito

On the cover: stylized drawing of Amazonian manatee (Trichechus inunguis) © João Araújo Ramalho de Azevedo

On the cover: stylized drawing of franciscana (Pontoporia blainvillei) © Mauricio Polito