Hand-drawn illustration depicting three marlin species of the genus Makaira, executed mid-20th century. This finely detailed natural history drawing represents: Makaira mitsukurii Makaira nigricans ampla Makaira nigricans marlin The work is executed entirely by hand, with visible graphite grid lines and coded markings beneath the paint layer, suggesting a preparatory studio method or transfer technique typical of professional natural history illustrators. The technique appears to be gouache or possibly early acrylic on paper. The modeling of the fish, subtle tonal transitions and anatomical precision recall the marine wildlife works of Walter Stackpool, although the piece is not formally attributed. A blind embossed stamp is present in the lower left corner (unidentified), indicating possible institutional or workshop origin. Recently professionally framed in a deep blue wooden frame with museum-quality anti-reflective glass. with its elegant maritime aesthetic and refined scientific character, this piece would be ideally suited to a seaside residence, a coastal chic living room, a collector’s study, or even aboard a boat or yacht, where it would naturally complement both contemporary and classic nautical interiors.