Stenopus with eggs in the Mediterranean Sea, Bacoli Italy.

Salvatore Ianniello

Bullheads are born every year in winter. Taken in Grevelingen.

Luc Rooman

Pictured is a male cardinal fish "intent" on hatching his eggs. Taken in Malapascua, Philippines.

Marcello Di Francesco

Snooted mantis shrimp with eggs was taken at 13M deep in Lembeh Strait, Indonesia.

Alan Lo

Spring is the best season to shoot nudibranchs in the Mediterranean. Here a white Flabellina (ebdemic species) during spawning. Taken in Argentario, Italy.

Marcello Di Francesco

Night dive with this apagon fish taking care of his future family. Taken in Tenerife.

Eduardo Acevedo

A peacock mantis shrimp with eggs taken in Ambon, Indonesia.

Goos Van Der Heide

Male cardinal fish "intent" on hatching his eggs in Malapascua, Philippines.

Marcello Di Francesco

I saw this pregnant ringed pipefish at around 10 meters underwater. She kept moving and sometimes turned her body over; I saw these beautiful eggs on her back and was so lucky to get this photo. Taken in Kenting, Taiwan.

Yen-Yi Lee

Bullheads can be seen with eggs every year in winter. Taken in Lake Grevelingen.

Luc Rooman

A yellow Damsel hatches in Papua New Guinea.

Mark Fuller

Rare shot of yellowhead jawfish aerating eggs taken in Little Cayman.

Peter Allinson MD

At first I thought this was just another jawfish, and then I caught a glimpse of the eggs he was cradling in his mouth. It took nearly 50 minutes for him to be comfortable enough with me to let me get close enough to get this shot. Taken in Isla San Pedro Martir, Mexico.

J. Gregory Sherman

This flamboyant cuttle fish was taken at 12M deep. I was checking on the eggs every two days. Taken in Lembeh Strait, Indonesia.

Alan Lo

Nudibranch, cratena peregrina while spawning in Capo Noli, Mediterranean Sea.

Walter Bassi