Larval Pearlfish mimicking a siphonophore with its tendrils

larval pearlfish juvenile pearlfish carapus carapinae carapidae ophidiiformes fish larva juvenile fish blackwater black water diurnal diurnal vertical migration pelagic open ocean underwater world deep water pelagic zone oceanic life open ocean life pelagic creatures blackwater species aquatic behavior siphonophore mimicry siphonophore movement squid behavior cozumel pearlfish tendrils siphonophore imitation marine invertebrates pearlfish behavior siphonophorelike appearance squid video fish mimicry larval mimicry underwater footage marine ecology ocean habitats siphonophore video aquatic mimicry pelagic zone creatures blackwater footage marine diversity larval fish behavior underwater creatures squid inking