While the more popular cetacean species exist in most parts of the world, there exist many that are confined to their own little corner of the ocean, such as the North Pacific white-sided dolphin (Sagmatias obliquidens). These dolphins exist across the entire span of the North Pacific.
Not to be conflated with sawsharks, sawfish are a family of rays belonging to the Pristidae family. This family is distinguished by an elongated rostrum. This “saw” is equipped with specialized external “teeth” and sensory structures to aid in electroreception and prey capture. Sawfish share ancestral affinities with the guitarfish. Currently, five species across two genera are recognized.
For author’s summary of species look here
This will be the last review of a cetacean species from the Monterey Bay Aquarium collection, the sperm whale adult and calf pair.
The adult female measures 29 cm, which corresponds to an 11.6 m whale at the marketed 1:40 scale. Above, you can see it scales well with the Safari Sea Life giant squid (24.5 cm/9.8 m) and the CollectA basking shark (22 cm/ 8.8 m).
Review and images by callmejoe3; edited by bmathison1972
Among the various impressive macropredators in the ocean, the tiger shark (Galeocerdo cuvier), is among the most powerful and strangest. The tiger shark belongs to the Carcharhinidae family, often referred to as the “requiem sharks”. The Galeocerdo genus was once diverse, but the tiger shark remains the only extant species within this clade.
