Got some old slides and negatives of underwater images that you wish you could revitalize and process in postproduction? John A. Ares describes in detail how one can convert film into digital files by using a DSLR camera and a macro lens.
The revelation that basking sharks are partially warm-blooded challenges previous assumptions about the physiology of these colossal creatures and has significant implications for their conservation and understanding of marine ecosystems.
Ecotourism, particularly shark diving tourism, has become a significant global industry, attracting over half a million participants annually across approximately 85 countries. While it generates substantial revenue and raises awareness for shark conservation, concerns about its impact on shark behaviour and health, as well as human safety, persist.
Ecotourism has been posited as a potential solution to many of the issues facing shark conservation, yet increasingly studies suggest that such activity may negatively influence aspects of shark ecology and so further pressure declining populations.
— Joel H. Gayford, et al.
The painted hornshark resembles the zebra bullhead shark, Heterodontus zebra, in its dark bar and saddle colouring, but the difference lies in the colouring of the tip of the snout and its fins.
The painted hornshark features a bifurcated, semicircular dark bar on its snout, while the zebra bullhead shark has a pointed triangular marking. Additionally, the painted hornshark lacks the dark bar extending from below the gill slits to the pectoral fins, which is present in the zebra bullhead shark.
