can the first one be eaten by humans?
Yes, a major food resource and are used in cuisines around the world.
Squid
Squid form a major food resource and are used in cuisines around the world, notably in Japan where it is eaten as ika sōmen, sliced into vermicelli-like strips; as sashimi; and as tempura. 
what is the catlins? An area in the southeastern corner of the South Island of New Zealand. how unique is the wildlife there? New Zealand fur seals and Hooker's sea lions, and occasionally southern elephant seals can be seen here. what type is the third one? It is the largest member of the clade Pinnipedia and the order Carnivora. how does it look like? The eyes are large, round, and black. The width of the eyes, and a high concentration of low-light pigments, suggest sight plays an important role in the capture of prey. how did it get the name? It gets its name from its massive size and the large proboscis of the adult male what do they eat? squid and fish.
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Squid [SEP] As food
Squid form a major food resource and are used in cuisines around the world, notably in Japan where it is eaten as ika sōmen, sliced into vermicelli-like strips; as sashimi; and as tempura. Three species of "Loligo" are used in large quantities, "L. vulgaris" in the Mediterranean (known as "Calamar" in Spanish, "Calamaro" in Italian); "L. forbesii" in the Northeast Atlantic; and "L. pealei" on the American East Coast. Among the Ommastrephidae, "Todarodes pacificus" is the main commercial species, harvested in large quantities across the North Pacific in Canada, Japan and China. In English-speaking countries, squid as food is often called "calamari", adopted from Italian into English in the 17th century.