Mararikulam Mahadeva Temple, located in Mararikulam in Alappuzha district, is one of the ancient Shiva temples widely revered by devotees and visitors alike. It is believed to be one of the 108 Shiva temples consecrated by Lord Parashurama. The temple is unique for its self-manifested (Swayambhoo) deities, with Lord Shiva and Goddess Parvathi enshrined facing each other directly, a rare feature found in Kerala. It is also believed that even the very name ”Mararikulam” is associated with this temple. As one of the rare temples where the ritual of Aarattu is performed in the sea, it holds great spiritual and ritual significance. The temple is traditionally managed as an Oorayma temple under the authority of the Paduthol Pazhoor Mana, a well-known Brahmin family near Piravom in Ernakulam district.
Historically, it is believed that the major construction works of this temple were led by Vilwamangalam Swamiyar. It is said that he discovered the self-manifested (Swayamb-hoo) Shivalingas present here and initiated the foundational works that led to the present form of the sanctum and temple complex.
Based on the period associated with Vilwamangalam Swamiyar, the temple is believed to be around 700 years old. 
Following his consecration (tharakkol / foundation laying), the major expansion works, including the construction of the outer circumambulatory structure and associated mandapas, were carried out by the erstwhile Ooralans, the senior members of the Paduthol Pazhoor Mana. The temple was designed and built in the traditional Kerala architectural style, featuring timber structures, stone elements and tiled roofing.
Later, even after coming under the administration of the Travancore Devaswom Board, various renovation works were undertaken under the guidance of the local temple advisory committee. However, these efforts have not altered the original character or the centuries-old structural integrity of the temple, which continues to retain its 700-year-old traditional heritage.
The origin and distinctive features of the Mararikulam Mahadeva Temple are associated with two main legends. In ancient times, this coastal region was known for the abundant availability of screw pine leaves (kaitha oola), which were used for thatching purposes. According to one belief, a woman from a marginalised community was once cutting these leaves at a local pond bank when she used a stone nearby to sharpen her sickle.
At that very moment, the stone is said to have begun oozing blood-like fluid, which frightened her. She immediately informed the local people and later the chief landlord, the senior member of the Pazhoor Mana family. A later Deva Prashnam is believed to have confirmed that the object was not an ordinary stone but a Swayambhoo Shivalinga, the self-manifested presence of Lord Shiva. Following this, the Shivalinga was consecrated at the pond bank and worship began there. It is believed that the place later came to be known as ”Mararikulam,” derived from ”Marari” (a reference to Lord Shiva) residing at the pond bank.
Following the demise of Sati Devi, it is believed that Lord Shiva, deeply grief-stricken, came to this serene coastal region and engaged in intense meditation. 
At the same time, it is also believed that Goddess Parvathi performed penance here in a swayamvara form, with the intention of being united with Lord Shiva so that a son capable of vanquishing the Asura Tarakasura could be born. In order to disturb Lord Shiva’s meditation, the Devas are said to have deputed Kamadeva (Mara), who shot an arrow at Shiva. Enraged by this act, Lord Shiva opened his third eye and reduced Kamadeva to ashes. Based on this incident, it is believed that Shiva here is worshipped as ”Maran’s Ari” (the enemy of Kamadeva). After the episode of Kamadahana, Lord Shiva is said to have been pleased and pacified by Parvathi Devi’s devotion. It is believed that this led to the unique installation of Shiva and Parvathi facing each other directly—Shiva facing east and Parvathi facing west—in a mutual darshan arrangement. According to another legend, it was the great Vilwamangalam Swamiyar who identified these two self-manifested divine presences and later guided the establishment of separate sanctums and the ritual practices as they are observed today.
Mararikulam Mahadeva Temple is located right at the centre of Mararikulam village. At the eastern entrance of the temple, the gateway is adorned with carvings of Lord Shiva, Goddess Parvathi and Lord Vishnu, 
while on either side are depictions of Lord Ganesha and Lord Ayyappa. At the western entrance, a beautifully crafted Shiva statue was installed in 2016. An old sacred banyan tree (aalmaram) stands on the eastern side of the temple complex. There are two temple ponds situated in the north-east and south-west directions, of which the second pond holds special significance. Known as Harinithirtham, it is believed that after the ritual sea Aarattu, the deity returns here to perform another sacred bath.
Upon entering through the eastern gateway, the first structure that comes into view is a small Aanakkottil (elephant shelter). Nearby is the sanctum of Goddess Parvathi, one of the principal deities of the temple. Beyond this are two flagstaffs (Kodimaram), dedicated to Nandi, the vehicle of Lord Shiva and the lion, the vehicle of the Goddess.
Further ahead of the Shiva shrine’s flagstaff lies the Balikkalpura (offering hall). In the south-western side of the temple are the Navagraha deities along with Yakshiamma, with Yakshiamma’s shrine located just north of the Navagrahas. On the north-western side, the Naga deities are enshrined beneath a specially consecrated banyan tree. A little further north lies the original temple dedicated to Dhanvanthari, locally known as Vaddakkanappan. The idol, about three feet in height and facing east, is a four-armed form believed to hold the Sudarshana Chakra in the back right hand, the Panchajanya conch in the back left hand, the Amritakumbha in the front left hand and an Atta in the front right hand.
The temple features a single-storey rectangular sanctum sanctorum (Sreekovil). Built in granite, the sanctum has a fully copper-clad roof, topped with a gleaming golden finial (thazhikakkudam). The Sreekovil consists of three inner chambers. The first chamber is used by the priests (Shanthikkar) for rituals and offerings and for keeping pooja utensils and materials required for the nivedyam. 
The second chamber serves as an antaralam, acting as a sacred transitional space that separates the sanctum’s divine sanctity and ritual secrecy from the outer areas. Within this lies the garbhagriha at the western end, where the self-manifested (Swayambhoo) Shiva Lingam, approximately one foot in height, is enshrined with Lord Mararikulathappan facing east.
Since the main deity is installed below ground level, the sopana steps descend down-wards towards the sanctum. On either side of the sanctum doorway are the figures of Dwarapalakas (guardian deities). On the northern side, a specially constructed outlet (oov) allows the drainage of ablution water. As this is a Shiva temple, circumambulation (pradakshina) within this inner sanctum area is traditionally restricted.
The Sreekovil is enclosed by a Nalambalam structure. Built in granite, the Nalambalam also features a copper-clad roof, while its outer walls are adorned with decorative lamp niches (vilakkumadam). Inside the Nalambalam, the south-western chamber houses the east-facing idol of Lord Dharmashastha and the north-western chamber enshrines the east-facing idol of Lord Subrahmanya Swamy. The inner balivattam (circumambulatory offering space) surrounding the Sreekovil is also present within this sacred layout.
The temple’s principal festival is the ten-day annual Tiruvutsavam, which begins with the Kodiyettu (flag hoisting) on the Kumbham month’s Kartha Shashti day. During the festival days, special poojas, Sri Bhoothabali, annadanam (community feast) and Kazhcha Sheeveli are performed, along with traditional art forms such as Kathakali, Chakyar Koothu and Nangyar Koothu. On the ninth day of the festival, which coincides with Mahashivaratri, the Pallivetta ritual is conducted. On the tenth day, the festival concludes with the unique Aarattu ceremony in the Arabian Sea during the evening on the Amavasya day, where the idols of the Lord and Goddess are taken for ritual bathing—one of the rarest traditions among Kerala temples.
Mahashivaratri is considered one of the most important occasions here, marked by special poojas throughout the night, Laksharchana and Vilakku Utsavam, attracting thousands of devotees. Other significant observances include Thiruvathira in the Dhanu month, Vishu in Medam, Navaratri in Kanni, Thrikkarthika in Vrischikam and Dhanvantari Jayanti in Thulam, all of which are celebrated with special rituals. 
In addition, on every monthly Pradosham day, special Pradosha pooja, Palabhishekam and Karikabhishekam are performed for Lord Shiva.
The main offerings of the temple include the Umamaheshwara Archana dedicated to Lord Parvathi-Parameshwara, which is performed for marital harmony and strengthening fam-ily relationships. The Swayamvara Archana is a significant ritual undertaken by devotees seeking the removal of marriage obstacles and the fulfilment of marriage proposals. A distinctive practice of this temple is the lighting of the Pinvilakku (rear lamp) at the shrine of Goddess Parvathi, which faces west behind the sanctum of Lord Shiva.
Dhara rituals (Jaladhara and Ksheeradhara) are also performed to appease Lord Shiva and to seek blessings for the fulfilment of wishes. Offering Koovalamala (garland of sacred bilva leaves) is considered highly auspicious and is performed with deep devotion. The Mrityunjaya Homa is conducted for longevity, good health and the removal of obstacles in life.
For Lord Dhanvantari, special poojas and Aushadha Seva are performed for relief from illnesses and for attaining good health. Among the other deities, Ganapathi Homa is conducted for the removal of obstacles, Neeranjanam is offered to Lord Shastha and the Navagrahas for pacifying doshas, and Noorum Paalum (milk and rice offering) is performed for the Naga deities to remove Sarpa dosha. In addition, devotees also perform Shayanapradakshinam for the fulfilment of major wishes, along with offerings such as Kadum Payasam, Pal Payasam and Vella Nivedyam.
The temple opens daily at 5:00 AM with the opening of the sanctum and the sacred Nirmalya Darshan, marking the beginning of the day’s rituals. This is followed by Ab-hishekam at 5:30 AM, Malar Nivedyam and Ushapooja at 6:00 AM, and Ethirettu Pooja at 7:00 AM. The Pantheeradi Pooja is performed at 8:30 AM, followed by the Ucha Pooja at 10:30 AM with elaborate offerings, after which the sanctum is closed at 11:00 AM.
In the evening, the temple reopens at 5:00 PM. The Deeparadhana along with Kar-poorarathi is conducted at 6:30 PM in a deeply devotional atmosphere, followed by Athazha Pooja and nivedyam at 7:30 PM. The day concludes with Thripuka and the closing of the sanctum at 8:00 PM. On special occasions such as Shivaratri, the annual festival (Thiruvutsavam), Pradosham and Dhanu Thiruvathira, the pooja schedule may vary, with extended rituals and changes in both noon and night closing times.