Felis Images / Softshell turtle (Nilssonia sp) walking on sand at sunset. Photo Anjani Kumar/Felis Images

Alex Mustard / Florida softshell turtle (Apalone ferox) rests on the bed of a river. Rainbow River, Florida, United States of America.

Alex Mustard / Florida softshell turtle (Apalone ferox) in plants at the bottom of a river. Rainbow River, Florida, United States of America.

Alex Mustard / Florida softshell turtle (Apalone ferox) swimming over plants at the bottom of a river. Rainbow River, Florida, United States of America.

Alex Mustard / Florida softshell turtle (Apalone ferox) in plants at the bottom of a river. Rainbow River, Florida, United States of America.

Claudio Contreras / Spiny softshell turtle (Apalone spinifera), captive

Donald M. Jones / Florida Softshell Turtle (Apalone ferox), Sarasota, Florida

Loic Poidevin / Indian flapshell turtle (Lissemys punctata) out of water, Keolado Ghana National Park, Bharatpur, Rajasthan, India

Barry Mansell / Florida softshell turtle (Apalone ferox), Everglades National Park, South Florida, USA, May

Rolf Nussbaumer / Spiny softshell (Apalone spinifera) adult basking on the river bank, Dinero, Lake Corpus Christi, South Texas, USA.

Konrad Wothe / Spiny softshell turtle (Apalone spinifera) captive

Nature Production / Chinese softshell turtle (Pelodiscus sinensis) eggs in nest in ground, Japan