This is the porcupine crab (Neolithodes grimaldii), found in the deep sea bed along the continental slopes of the Atlantic Ocean. A member of the king crab family, its carapace, or body, can stretch up to 18 cm long, and it can weigh over 2 kg. But that's nothing compared to the blue king crab (Paralithodes platypus) from Alaska, which weighs a whopping 8 kg.


Image: NOAA Okeanos Explorer Program