Embryonic specimens of the small-spotted catshark, Scyliorhinus canicula, which lives along the continental shelves of the north-eastern Atlantic and the Mediterranean. Females lay egg capsules in winter, and these capsules become attached to rocks and seaweed by their long tendrils (the remains of one tendril can be seen on the dissected egg case at upper left). The young are 10 cm long when they emerge from the egg case after 8 to 10 months gestation.