The focus of today’s blog is on swordfish. This was inspired by a recent visit to Antica Pescheria da Menelik in Trastevere, Rome, a cornerstone of the local community since 1920. Swordfish are a large, migratory fish that can be found in most of the world’s oceans. They are usually 3m long and distinguishable by their long, flat, pointed bill shaped like a sword. However, these hunters do not stab their prey with the sword; they use their bill to stun their prey as a sort of batting stick. Swordfish travel and hunt alone, often at night. They are apex predators that feed on pelagic fish, cephalopods, and squid. Swordfish are classified as a “near-threatened” species. Their biggest threats are human fishing activities and the bioaccumulation of heavy metals like mercury. This process occurs as Swordfish eat smaller fish containing toxic metals, and so much so that it accumulates in the tissues of their bodies. This is exacerbated by their fast metabolism, which ensures...