An obsidian-manta-stingray with a body of volcanic glass formations merging into graceful manta wings of cooling basalt fibers, gliding through a volcanic island underwater canyon at sunset where submarine lava flows create glowing red rivers across the seabed and pillar coral formations rise from iron-rich sediment, scientific field notes cross-section mapping heat-dissipating glass tissue networks and pressure-resistant silicate bone structures, palette of volcanic black, lava red, deep ocean indigo and pale thermal white, Victorian natural history geological-maritime expedition illustration aesthetic with detailed volcanic annotation callouts and crosshatched lava flow shading