Electropositive shark repellent Atlantic longlining vessels in 2008. As expected, teleosts (bony fish) are not repelled by the electropositive metal’s cation liberation in seawater. This is because teleosts lack the ampullae of Lorenzini. Teleost response was confirmed using captive Cobia ("Rachycentron canadum") and Pacific halibut ("Hippoglossus stenolepis"). In July 2008 swordfish ("Xiphias gladius") catch was reported on experimental hooks treated with electropositive metal. As with all shark repellents, 100% effectiveness will not be achieved with electropositive metals. The metals are particularly effective when the shark is relying on its electrosense. It is likely that electropositive metals are ineffective for deliberately stimulated (chummed) sharks,
Flat Bastion portion, now a geological research and exhibition facility. The bastion is a listed building with the Gibraltar Heritage Trust. While St. Jago's Bastion has been said to be an early name for Flat Bastion, it has a separate listing with the Gibraltar Heritage Trust, next to those for Flat Bastion and Flat Bastion Magazine. The Spanish began construction of Flat Bastion in the 16th century, in 1552, at which time it was referred to as St. Jago's or Santiago's Bastion (). According to Dr. Darren Fa and Professor Clive Finlayson, both of the Gibraltar Museum, Flat Bastion was built by