Tuvok shot down a second avian as it dove toward him, but a third ripped through Lavena's hood and tore her gill membranes.

Its gill membranes are fused, but one v-shaped gill is located beneath the head.

As such, standard fish poisons or piscicides (e.g., rotenone and antimycin-A) that are transmitted across the gill membrane may not be effective.

The gill raker openings are wide, the gill membranes are joined below.

Thirteen branchiostegal rays support the gill membranes behind the lower jaw.

The gill membranes are fused, and the gill opening is either a slit or pore underneath the throat.

A second source of electric fields in fish is the ion pumps associated with osmoregulation at the gill membrane.

The cold, dry air pulled every molecule of moisture from his gill membranes and parched his air ducts all the way to his lungs.

E. swaini is known for its laterally compressed, robust body, small, conical head, slightly joined gill membranes and a wide frenum on its upper lip.

Additional characteristics include separate gill membranes in both male and female, as well as enlarged soft dorsal fins in breeding males.