Cusk are a recreational groundfish species in the Gulf of Maine that exhibit severe barotrauma symptoms. Barotrauma is physical damage caused by a change in pressure. This is caused by the pressure change between the deep waters where they dwell and the surface. When some fish are brought to the surface, they are unable to regulate the volume of air in the swim bladder resulting in a rupture that can send air into tissues and other spaces (such as behind the eyes). In certain species, the swimbladder may not rupture, but as it expands, it may force internal organs to move and can result in fish having these organs forced out of their mouths. We have begun studying at-depth release of groundfish species like cusk to reduce the effects of barotrauma and released individuals. This video demonstrates how two recreational release devices work to return cusk to the approximate depth of their initial capture for release. Funds for this research were awarded through a West Marine Blue Future grant. GoPro cameras were used to film for this research, and were bought with the Blue Future grant monies. We do not endorse, nor are we endorsed, by GoPro.

• published: 24 Apr 2014
• views: 103