These translucent white polyps are tools when the dead man's fingers corall is feeding. They project from the crust of the coral and filter the surrounding water for food. The polyps have stinging cells (nematocysts), and even if they are not as powerfuls as those of a jellyfish, they will stun the prey that often are tiny crayfish (plankton). The dead man's finger coral habitats Scandinavia, the British Isles and Iceland at depths from 10 to 50 meters.
The pygmy seahorses comprise several species of tiny seahorse in the syngnathid family or Syngnathidae (seahorses and pipefish). Family Syngnathidae is part of order Syngnathiformes, which contains fishes with fused jaws that suck food into tubular mouths. They are found in Southeast Asia in the Coral Triangle area. They are some of the smallest seahorse species in the world, typically measuring less than 2 centimetres (0.79 in) in height.