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Sharks have one of the highest for fish alongside manta rays (although the electrogenic elephantfish has a ratio nearly 80 times higher—about 1/32, which is slightly higher than that for humans). [14] Treeshrews have a higher brain to body mass ratio than any other mammal, including humans. [15] Treeshrews hold about 10% of their body mass in ...
Dietitians share which fish and shellfish are the most nutritious and which to avoid. What is the healthiest seafood to eat? This is the healthiest seafood, according to experts
[57] [58] Further, there is no evidence that humans ate fish in significant amounts earlier than tens to hundreds of thousands of years ago. [59] Supporters argue that the avoidance of taphonomic bias is the problem, as most hominin fossils occur in lake-side environments, and the presence of fish remains is therefore not proof of fish ...
A example size comparison of a whale shark and a human. It is always beneficial to have a picture that communicates a sense of scale. This can be achieved by placing standard sized physical objects next to the fish (human hand or body, tape measure, etc.), before taking the photo. Sometimes the background scenery will already do the job.
Most fish species seem to have a fixed pupil size, but elasmobranches (like sharks and rays) have a muscular iris which allows pupil diameter to be adjusted. Pupil shape varies, and may be e.g. circular or slit-like. [5] Lenses are normally spherical but can be slightly elliptical in some species.
Holly Thomas writes the depiction of sharks as murderous fiends on the basis of remarkably few negative encounters is gravely hypocritical in the face of humans’ devastating effects on them ...
Shark meat is a seafood consisting of the flesh of sharks. Several sharks are fished for human consumption, such as porbeagles, shortfin mako shark, requiem shark, and thresher shark, among others. [1] Shark meat is popular in Asia, where it is often consumed dried, smoked, or salted. [2]
Fish typically have quite small brains relative to body size compared with other vertebrates, typically one-fifteenth the brain mass of a similarly sized bird or mammal. [10] However, some fish have relatively large brains, most notably mormyrids and sharks, which have brains about as massive relative to body weight as birds and marsupials. [11]