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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.
Automatic tracing of complex images can produce overly-large files, inaccurate outlines, and often miss out smaller details completely. Please consider editing this image by hand in a vector editor to improve it. For further information please see our picture tutorial and SVG help. For assistance, refer to the Graphics Lab
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.
The study found that whale sharks are skilled divers, so orcas attack from below and keep the whale shark at the water's surface. Then, the orcas find a way to flip the whale shark so it's belly up.
Studies so far have shown the sequence and the gene order are more similar between human and elephant shark genomes than between human and teleost fish genomes (pufferfish and zebrafish), though humans are more closely related to teleost fishes than to the Australian ghostshark. The Elephant Shark Genome Project was launched with the aim to ...
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 ...
The basking shark is a ram feeder, filtering zooplankton, very small fish, and invertebrates from the water with its gill rakers by swimming forwards with its mouth open. A 5-metre-long (16 ft) basking shark has been calculated to filter up to 500 short tons (450 t) of water per hour swimming at an observed speed of 0.85 metres per second (3.1 ...
Image credits: theblessedimages Dr. Golbeck then divided the participants into two groups. One spent five minutes looking at adorable dog pictures.The other group spent the same amount of time ...