Mantle detail on a spondylus (Thorny Oyster shell) (Spondylus varians), Philippines, Southeast Asia, Asia

animal animal shell animal themes animals in the wild aquatic beautiful beauty beauty in nature biological biology bivalve carapace chordata clam close up color image coral triangle day detail extreme close up fauna horizontal invertebrate mantle marine biology mollusk no people ocean life one animal open opening outdoors oyster pectinida pectinoida pectinoidea philippines photography sea life seashell shallow shell southeast asia spiny oysters spondylidae spondylus spondylus varians thorny oyster undersea underwater variable thorny oyster wildlife