background caves cliff coastal coastal-landforms coastline color colour cracks crannies formations grained grainy holes hollows landscape layers levels limestone outcrop rocks rocky rough seashore seaside sedimentary-rock shade shadows shapes sharp shore Sizes sky solid stones strength strong surfaces surfacing textured textures uneven variations variety vegetation weathered coast light ocean sand sea seagull shoreline stony sunlight sunshine surface surge surging swirl swirling texture tidal tides waves abstract blackish blotched colored colorful colors coloured colourful colours cultural culture dark decorative disguise display distinctive entertaining eyes face facial fancy-dress fun hidden hidden-identity hiding hiding-identity hollow identity mask masquerade mean-mouthed mottled mouth multicolored multicoloured nose paint painted patterns play scary shiny spooky theater theatre theatrical architectural backdrop barrier brick brick-wall bricks brickwork builders building cement coloring colouring concrete constructed construction-work exterior external firm linear lines mortar perspective perspectives rectangular secure security standard style surfaced variation varied wall walled wallpaper blue shrubbery shrubs appearance blended bright bundle circles circular coloration contrasting design glowing interconnected interlinked lighting multi-colored Multi-Coloured patterned shape shaped thick thin tubes tubular vibrant animal aquarium aquatic bulbous bulbous-growth carnivore carnivorous critically-endangered crocodile crocodilian elongated-snout fish-eating-crocodile freshwater gavial gavialis-gangeticus ghara Gharial hollow-bulbous-nasal-protuberance Indian-gavial Indian-gharial interdigitated-teeth jaws long-narrow-snout long-nosed-crocodile nostril-swelling piscivorous protuberance reptile reptilian Singapore teeth vocal-resonator water zoo cover covered covering device discarded dose-delivery drug-delivery easy-to-use essential-care fine-points hollow-needles in-use injection-pen-needles injections medical medical-equipment metal multiple-daily-injections needle needles pen-needles penetration plastic plastic-caps plastic-hubs safety self-care self-treatment sharps steel tips used